/**
* Condition function to evaluate and display given block based on expressions
* 'args' => arguments for evaluation fields
*
* Supported actions and symbols:
*
* Integer and floating-point numbers
* Math operators: +, -, *, /
* Comparison operators: <, >, =, <=, >=, !=
* Boolean operators: AND, OR, NOT
* Nested expressions - several levels of brackets
* Variables defined as shortcode parameters starting with a dollar sign
* empty() function that checks for blank or non-existing fields
*
*
* @note As of 1.9, this is not used in Views anymore, seems to be used on the toolset-forms library
*/
function wpv_condition($atts, $post_to_check = null)
{
extract(shortcode_atts(array('evaluate' => FALSE), $atts));
// Do not overwrite global post
// global $post;
// if in admin, get the post from the URL
if (is_admin()) {
if (empty($post_to_check->ID)) {
// Get post
if (isset($_GET['post'])) {
$post_id = (int) $_GET['post'];
} else {
if (isset($_POST['post_ID'])) {
$post_id = (int) $_POST['post_ID'];
} else {
$post_id = 0;
}
}
if ($post_id) {
$post = get_post($post_id);
}
} else {
$post = $post_to_check;
}
}
if (empty($post->ID)) {
global $post;
}
$has_post = true;
if (empty($post->ID)) {
// Will not execute any condition that involves custom fields
$has_post = false;
}
global $wplogger;
if ($has_post) {
do_action('wpv_condition', $post);
}
$logging_string = "Original expression: " . $evaluate;
add_filter('wpv-extra-condition-filters', 'wpv_add_time_functions');
$evaluate = apply_filters('wpv-extra-condition-filters', $evaluate);
$logging_string .= "; After extra conditions: " . $evaluate;
// evaluate empty() statements for variables
if ($has_post) {
$empties = preg_match_all("/empty\\(\\s*\\\$(\\w+)\\s*\\)/", $evaluate, $matches);
if ($empties && $empties > 0) {
for ($i = 0; $i < $empties; $i++) {
$match_var = get_post_meta($post->ID, $atts[$matches[1][$i]], true);
$is_empty = '1=0';
// mark as empty only nulls and ""
// if ( is_null( $match_var ) || strlen( $match_var ) == 0 ) {
if (is_null($match_var) || is_string($match_var) && strlen($match_var) == 0 || is_array($match_var) && empty($match_var)) {
$is_empty = '1=1';
}
$evaluate = str_replace($matches[0][$i], $is_empty, $evaluate);
$logging_string .= "; After empty: " . $evaluate;
}
}
}
// find variables that are to be used as strings.
// eg '$f1'
// will replace $f1 with the actual field value
if ($has_post) {
$strings_count = preg_match_all('/(\'[\\$\\w^\']*\')/', $evaluate, $matches);
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
$string = $matches[1][$i];
// remove single quotes from string literals to get value only
$string = strpos($string, '\'') === 0 ? substr($string, 1, strlen($string) - 2) : $string;
if (strpos($string, '$') === 0) {
$variable_name = substr($string, 1);
// omit dollar sign
if (isset($atts[$variable_name])) {
$string = get_post_meta($post->ID, $atts[$variable_name], true);
$evaluate = str_replace($matches[1][$i], "'" . $string . "'", $evaluate);
$logging_string .= "; After variables I: " . $evaluate;
}
}
}
}
}
// find string variables and evaluate
$strings_count = preg_match_all('/((\\$\\w+)|(\'[^\']*\'))\\s*([\\!<>\\=]+)\\s*((\\$\\w+)|(\'[^\']*\'))/', $evaluate, $matches);
// get all string comparisons - with variables and/or literals
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
// get both sides and sign
$first_string = $matches[1][$i];
$second_string = $matches[5][$i];
$math_sign = $matches[4][$i];
// remove single quotes from string literals to get value only
$first_string = strpos($first_string, '\'') === 0 ? substr($first_string, 1, strlen($first_string) - 2) : $first_string;
$second_string = strpos($second_string, '\'') === 0 ? substr($second_string, 1, strlen($second_string) - 2) : $second_string;
// replace variables with text representation
if (strpos($first_string, '$') === 0 && $has_post) {
$variable_name = substr($first_string, 1);
// omit dollar sign
if (isset($atts[$variable_name])) {
$first_string = get_post_meta($post->ID, $atts[$variable_name], true);
} else {
$first_string = '';
}
}
if (strpos($second_string, '$') === 0 && $has_post) {
$variable_name = substr($second_string, 1);
if (isset($atts[$variable_name])) {
$second_string = get_post_meta($post->ID, $atts[$variable_name], true);
} else {
$second_string = '';
}
}
// don't do string comparison if variables are numbers
if (!(is_numeric($first_string) && is_numeric($second_string))) {
// compare string and return true or false
$compared_str_result = wpv_compare_strings($first_string, $second_string, $math_sign);
if ($compared_str_result) {
$evaluate = str_replace($matches[0][$i], '1=1', $evaluate);
} else {
$evaluate = str_replace($matches[0][$i], '1=0', $evaluate);
}
} else {
$evaluate = str_replace($matches[1][$i], $first_string, $evaluate);
$evaluate = str_replace($matches[5][$i], $second_string, $evaluate);
}
$logging_string .= "; After variables II: " . $evaluate;
}
}
// find remaining strings that maybe numeric values.
// This handles 1='1'
$strings_count = preg_match_all('/(\'[^\']*\')/', $evaluate, $matches);
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
$string = $matches[1][$i];
// remove single quotes from string literals to get value only
$string = strpos($string, '\'') === 0 ? substr($string, 1, strlen($string) - 2) : $string;
if (is_numeric($string)) {
$evaluate = str_replace($matches[1][$i], $string, $evaluate);
$logging_string .= "; After variables III: " . $evaluate;
}
}
}
// find all variable placeholders in expression
if ($has_post) {
$count = preg_match_all('/\\$(\\w+)/', $evaluate, $matches);
$logging_string .= "; Variable placeholders: " . var_export($matches[1], true);
// replace all variables with their values listed as shortcode parameters
if ($count && $count > 0) {
// sort array by length desc, fix str_replace incorrect replacement
$matches[1] = wpv_sort_matches_by_length($matches[1]);
foreach ($matches[1] as $match) {
if (isset($atts[$match])) {
$meta = get_post_meta($post->ID, $atts[$match], true);
if (empty($meta)) {
$meta = "0";
}
} else {
$meta = "0";
}
$evaluate = str_replace('$' . $match, $meta, $evaluate);
$logging_string .= "; After variables IV: " . $evaluate;
}
}
}
$logging_string .= "; End evaluated expression: " . $evaluate;
$wplogger->log($logging_string, WPLOG_DEBUG);
// evaluate the prepared expression using the custom eval script
$result = wpv_evaluate_expression($evaluate);
if ($has_post) {
do_action('wpv_condition_end', $post);
}
// return true, false or error string to the conditional caller
return $result;
}
/**
* Condition function to evaluate and display given block based on expressions
* 'args' => arguments for evaluation fields
*
* Supported actions and symbols:
*
* Integer and floating-point numbers
* Math operators: +, -, *, /
* Comparison operators: <, >, =, <=, >=, !=
* Boolean operators: AND, OR, NOT
* Nested expressions - several levels of brackets
* Variables defined as shortcode parameters starting with a dollar sign
* empty() function that checks for blank or non-existing fields
*
*
*/
function wpv_condition($atts)
{
extract(shortcode_atts(array('evaluate' => FALSE), $atts));
global $post;
// if in admin, get the post from the URL
if (is_admin()) {
// Get post
if (isset($_GET['post'])) {
$post_id = (int) $_GET['post'];
} else {
if (isset($_POST['post_ID'])) {
$post_id = (int) $_POST['post_ID'];
} else {
$post_id = 0;
}
}
if ($post_id) {
$post = get_post($post_id);
}
}
global $wplogger;
$logging_string = "Original expression: " . $evaluate;
// evaluate empty() statements for variables
$empties = preg_match_all("/empty\\(\\s*\\\$(\\w+)\\s*\\)/", $evaluate, $matches);
if ($empties && $empties > 0) {
for ($i = 0; $i < $empties; $i++) {
$match_var = get_post_meta($post->ID, $atts[$matches[1][$i]], true);
$is_empty = '1=0';
// mark as empty only nulls and ""
if (is_null($match_var) || strlen($match_var) == 0) {
$is_empty = '1=1';
}
$evaluate = str_replace($matches[0][$i], $is_empty, $evaluate);
}
}
// find string variables and evaluate
$strings_count = preg_match_all('/((\\$\\w+)|(\'[^\']*\'))\\s*([\\!<>\\=]+)\\s*((\\$\\w+)|(\'[^\']*\'))/', $evaluate, $matches);
// get all string comparisons - with variables and/or literals
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
// get both sides and sign
$first_string = $matches[1][$i];
$second_string = $matches[5][$i];
$math_sign = $matches[4][$i];
// replace variables with text representation
if (strpos($first_string, '$') === 0) {
$variable_name = substr($first_string, 1);
// omit dollar sign
$first_string = get_post_meta($post->ID, $atts[$variable_name], true);
}
if (strpos($second_string, '$') === 0) {
$variable_name = substr($second_string, 1);
$second_string = get_post_meta($post->ID, $atts[$variable_name], true);
}
// remove single quotes from string literals to get value only
$first_string = strpos($first_string, '\'') === 0 ? substr($first_string, 1, strlen($first_string) - 2) : $first_string;
$second_string = strpos($second_string, '\'') === 0 ? substr($second_string, 1, strlen($second_string) - 2) : $second_string;
// don't do string comparison if variables are numbers
if (!(is_numeric($first_string) && is_numeric($second_string))) {
// compare string and return true or false
$compared_str_result = wpv_compare_strings($first_string, $second_string, $math_sign);
if ($compared_str_result) {
$evaluate = str_replace($matches[0][$i], '1=1', $evaluate);
} else {
$evaluate = str_replace($matches[0][$i], '1=0', $evaluate);
}
}
}
}
// find all variable placeholders in expression
$count = preg_match_all('/\\$(\\w+)/', $evaluate, $matches);
$logging_string .= "; Variable placeholders: " . var_export($matches[1], true);
// replace all variables with their values listed as shortcode parameters
if ($count && $count > 0) {
// sort array by length desc, fix str_replace incorrect replacement
wpv_sort_matches_by_length(&$matches[1]);
foreach ($matches[1] as $match) {
$meta = get_post_meta($post->ID, $atts[$match], true);
if (empty($meta)) {
$meta = "0";
}
$evaluate = str_replace('$' . $match, $meta, $evaluate);
}
}
$logging_string .= "; End evaluated expression: " . $evaluate;
$wplogger->log($logging_string, WPLOG_DEBUG);
// evaluate the prepared expression using the custom eval script
$result = wpv_evaluate_expression($evaluate);
// return true, false or error string to the conditional caller
return $result;
}
/**
* Condition function to evaluate and display given block based on expressions
*
* Supported actions and symbols:
*
* Integer and floating-point numbers
* Math operators: +, -, *, /
* Comparison operators: <, >, =, <=, >=, !=
* Boolean operators: AND, OR, NOT
* Nested expressions - several levels of brackets
* Variables defined as shortcode parameters starting with a dollar sign
* empty() function that checks for blank or non-existing fields
*
* @global type $wplogger
* @param type $evaluate
* @param type $fields
* @return type
*/
protected function _wpv_condition($evaluate, $fields)
{
global $wplogger;
$logging_string = "Original expression: " . $evaluate;
add_filter('wpv-extra-condition-filters', 'wpv_add_time_functions');
$evaluate = apply_filters('wpv-extra-condition-filters', $evaluate);
// evaluate empty() statements for variables
// $empties = preg_match_all( "/empty\(\s*\\$(\w+)\s*\)/", $evaluate,
// $matches );
$empties = preg_match_all("/empty\\(\\s*\\\$([\\w_-]+)\\s*\\)/", $evaluate, $matches);
if ($empties && $empties > 0) {
for ($i = 0; $i < $empties; $i++) {
$match_var = $this->_getValue($fields[$matches[1][$i]]);
$is_empty = '1=0';
// mark as empty only nulls and ""
// if ( is_null( $match_var ) || strlen( $match_var ) == 0 ) {
if (is_null($match_var) || is_string($match_var) && strlen($match_var) == 0 || is_array($match_var) && empty($match_var)) {
$is_empty = '1=1';
}
$evaluate = str_replace($matches[0][$i], $is_empty, $evaluate);
}
}
// find variables that are to be used as strings.
// eg '$f1'
// will replace $f1 with the actual field value
$strings_count = preg_match_all('/(\'[\\$\\w^\']*\')/', $evaluate, $matches);
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
$string = $matches[1][$i];
// remove single quotes from string literals to get value only
$string = strpos($string, '\'') === 0 ? substr($string, 1, strlen($string) - 2) : $string;
if (strpos($string, '$') === 0) {
$variable_name = substr($string, 1);
// omit dollar sign
if (isset($fields[$variable_name])) {
$string = $this->_getValue($fields[$variable_name]);
$evaluate = str_replace($matches[1][$i], "'" . $string . "'", $evaluate);
}
}
}
}
// find string variables and evaluate
// $strings_count = preg_match_all( '/((\$\w+)|(\'[^\']*\'))\s*([\!<>\=]+)\s*((\$\w+)|(\'[^\']*\'))/',
// $evaluate, $matches );
$strings_count = preg_match_all('/((\\$[\\w_-]+)|([\'\\d][^\']*[\'\\d]))\\s*([\\!<>\\=]+)\\s*((\\$[\\w_-]+)|([\'\\d][^\']*[\'\\d]))/', $evaluate, $matches);
// get all string comparisons - with variables and/or literals
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
// get both sides and sign
$first_string = $matches[1][$i];
$second_string = $matches[5][$i];
$math_sign = $matches[4][$i];
// remove single quotes from string literals to get value only
$first_string = strpos($first_string, '\'') === 0 ? substr($first_string, 1, strlen($first_string) - 2) : $first_string;
$second_string = strpos($second_string, '\'') === 0 ? substr($second_string, 1, strlen($second_string) - 2) : $second_string;
// replace variables with text representation
if (strpos($first_string, '$') === 0) {
$variable_name = substr($first_string, 1);
// omit dollar sign
if (isset($fields[$variable_name])) {
$first_string = $this->_getValue($fields[$variable_name]);
} else {
$first_string = '';
}
}
if (strpos($second_string, '$') === 0) {
$variable_name = substr($second_string, 1);
if (isset($fields[$variable_name])) {
$second_string = $this->_getValue($fields[$variable_name]);
} else {
$second_string = '';
}
}
// don't do string comparison if variables are numbers
if (is_numeric($first_string) && !is_numeric($second_string) || !is_numeric($first_string) && is_numeric($second_string)) {
$evaluate = str_replace($matches[0][$i], '1=0', $evaluate);
} else {
if (!(is_numeric($first_string) && is_numeric($second_string))) {
// compare string and return true or false
$compared_str_result = wpv_compare_strings($first_string, $second_string, $math_sign);
if ($compared_str_result) {
$evaluate = str_replace($matches[0][$i], '1=1', $evaluate);
} else {
$evaluate = str_replace($matches[0][$i], '1=0', $evaluate);
}
} else {
$evaluate = str_replace($matches[1][$i], $first_string, $evaluate);
$evaluate = str_replace($matches[5][$i], $second_string, $evaluate);
}
}
}
}
// find remaining strings that maybe numeric values.
// This handles 1='1'
$strings_count = preg_match_all('/(\'[^\']*\')/', $evaluate, $matches);
if ($strings_count && $strings_count > 0) {
for ($i = 0; $i < $strings_count; $i++) {
$string = $matches[1][$i];
// remove single quotes from string literals to get value only
$string = strpos($string, '\'') === 0 ? substr($string, 1, strlen($string) - 2) : $string;
if (is_numeric($string)) {
$evaluate = str_replace($matches[1][$i], $string, $evaluate);
}
}
}
// find all variable placeholders in expression
// $count = preg_match_all( '/\$(\w+)/', $evaluate, $matches );
$count = preg_match_all('/\\$([\\w-_]+)/', $evaluate, $matches);
$logging_string .= "; Variable placeholders: " . var_export($matches[1], true);
// replace all variables with their values listed as shortcode parameters
if ($count && $count > 0) {
// sort array by length desc, fix str_replace incorrect replacement
$matches[1] = wpv_sort_matches_by_length($matches[1]);
foreach ($matches[1] as $match) {
if (isset($fields[$match])) {
$meta = $this->_getValue($fields[$match]);
if (empty($meta)) {
$meta = "0";
}
} else {
$meta = "0";
}
$evaluate = str_replace('$' . $match, $meta, $evaluate);
}
}
$logging_string .= "; End evaluated expression: " . $evaluate;
$wplogger->log($logging_string, WPLOG_DEBUG);
// evaluate the prepared expression using the custom eval script
$result = wpv_evaluate_expression($evaluate);
// return true, false or error string to the conditional caller
return $result;
}
/**
* Condition function to evaluate and display given block based on expressions
* 'args' => arguments for evaluation fields
*
* Supported actions and symbols:
*
* Integer and floating-point numbers
* Math operators: +, -, *, /
* Comparison operators: <, >, =, <=, >=, !=
* Boolean operators: AND, OR, NOT
* Nested expressions - several levels of brackets
* Variables defined as shortcode parameters starting with a dollar sign
* empty() function that checks for blank or non-existing fields
*
*
*/
function wpv_condition_manage_and_evaluate( $atts, $post_to_check = null ) {
extract(
shortcode_atts(
array(
'evaluate' => false,
'debug' => false,
'condition' => true
),
$atts
)
);
$condition = ( $condition == 'true' || $condition === TRUE ) ? true : false;
// Do not overwrite global post
// global $post;
// if in admin, get the post from the URL
if ( is_admin() ) {
if ( empty( $post_to_check->ID ) ) {
// Get post
if ( isset( $_GET['post'] ) ) {
$post_id = (int) $_GET['post'];
} else if ( isset( $_POST['post_ID'] ) ) {
$post_id = (int) $_POST['post_ID'];
} else {
$post_id = 0;
}
if ( $post_id ) {
$post = get_post( $post_id );
}
} else {
$post = $post_to_check;
}
}
if ( empty( $post->ID ) ) {
global $post;
}
$has_post = true;
if ( empty( $post->ID ) ) {
// Will not execute any condition that involves custom fields
$has_post = false;
}
global $wplogger;
if ( $has_post ) {
do_action( 'wpv_condition', $post );
}
$logging_string = "####################\nwpv-if attributes\n####################\n"
. print_r( $atts, true )
. "\n####################\nDebug information\n####################"
. "\n--------------------\nOriginal expression: "
. $evaluate
. "\n--------------------";
$evaluate = str_replace( " NEQ ", " != ", $evaluate );
$evaluate = str_replace( " neq ", " != ", $evaluate );
$evaluate = str_replace( " EQ ", " = ", $evaluate );
$evaluate = str_replace( " eq ", " = ", $evaluate );
$evaluate = str_replace( " NE ", " != ", $evaluate );
$evaluate = str_replace( " ne ", " != ", $evaluate );
$evaluate = str_replace( " LT ", " < ", $evaluate );
$evaluate = str_replace( " lt ", " < ", $evaluate );
$evaluate = str_replace( " LTE ", " <= ", $evaluate );
$evaluate = str_replace( " lte ", " <= ", $evaluate );
$evaluate = str_replace( " GT ", " > ", $evaluate );
$evaluate = str_replace( " gt ", " > ", $evaluate );
$evaluate = str_replace( " GTE ", " >= ", $evaluate );
$evaluate = str_replace( " gte ", " >= ", $evaluate );
$evaluate = apply_filters( 'wpv-extra-condition-filters', $evaluate );
$logging_string .= "\nAfter expanding custom functions and date expressions: " . $evaluate;
// Evaluate empty($field) where $field is a custom field key
if ( $has_post ) {
$empties = preg_match_all( "/empty\(\s*\\$(\w+)\s*\)/", $evaluate, $matches );
if (
$empties
&& $empties > 0
) {
for ( $i = 0; $i < $empties; $i++ ) {
$is_empty = '1=0';
$is_empty_logging_extra = '';
if ( isset( $atts[$matches[1][$i]] ) ) {
$match_var = get_post_meta( $post->ID, $atts[$matches[1][$i]], true );
if (
is_null( $match_var )
|| (
is_string( $match_var )
&& strlen( $match_var ) == 0
)
|| (
is_array( $match_var )
&& empty( $match_var )
)
) {
$is_empty = '1=1';
$is_empty_logging_extra = "\n\tField " . $atts[$matches[1][$i]] . " is empty";
} else {
$is_empty_logging_extra = "\n\tField " . $atts[$matches[1][$i]] . " is not empty";
}
} else {
$is_empty_logging_extra = "\n\tERROR: Key '" . $matches[1][$i] . "' does not point to a valid attribute in the wpv-if shortcode";
}
$evaluate = str_replace( $matches[0][$i], $is_empty, $evaluate );
$logging_string .= "\nAfter checking " . ( $i + 1 ) . " empty statements: " . $evaluate . $is_empty_logging_extra;
}
}
}
// Evaluate quoted variables that are to be used as strings
// '$f1' will replace $f1 with the custom field value
if ( $has_post ) {
$strings_count = preg_match_all( '/(\'[\$\w^\']*\')/', $evaluate, $matches );
if (
$strings_count
&& $strings_count > 0
) {
for ( $i = 0; $i < $strings_count; $i++ ) {
$string = $matches[1][$i];
// remove single quotes from string literals to get value only
$string = (strpos( $string, '\'' ) === 0) ? substr( $string, 1, strlen( $string ) - 2 ) : $string;
if ( strpos( $string, '$' ) === 0 ) {
$quoted_variables_logging_extra = '';
$variable_name = substr( $string, 1 ); // omit dollar sign
if ( isset( $atts[$variable_name] ) ) {
$string = get_post_meta( $post->ID, $atts[$variable_name], true );
$evaluate = str_replace( $matches[1][$i], "'" . $string . "'", $evaluate );
} else {
$evaluate = str_replace( $matches[1][$i], "", $evaluate );
$quoted_variables_logging_extra = "\n\tERROR: Key " . $matches[1][$i] . " does not point to a valid attribute in the wpv-if shortcode: expect parsing errors";
}
$logging_string .= "\nAfter replacing " . ( $i + 1 ) . " quoted variables: " . $evaluate . $quoted_variables_logging_extra;
}
}
}
}
// Evaluate non-quoted variables, by de-quoting the quoted ones if needed
$strings_count = preg_match_all( '/((\$\w+)|(\'[^\']*\'))\s*([\!<>\=]+)\s*((\$\w+)|(\'[^\']*\'))/',
$evaluate, $matches );
// get all string comparisons - with variables and/or literals
if (
$strings_count
&& $strings_count > 0
) {
for ( $i = 0; $i < $strings_count; $i++ ) {
// get both sides and sign
$first_string = $matches[1][$i];
$second_string = $matches[5][$i];
$math_sign = $matches[4][$i];
$general_variables_logging_extra = '';
// remove single quotes from string literals to get value only
$first_string = ( strpos( $first_string, '\'' ) === 0 ) ? substr( $first_string, 1, strlen( $first_string ) - 2 ) : $first_string;
$second_string = ( strpos( $second_string, '\'' ) === 0 ) ? substr( $second_string, 1, strlen( $second_string ) - 2 ) : $second_string;
$general_variables_logging_extra .= "\n\tComparing " . $first_string . " to " . $second_string;
// replace variables with text representation
if (
strpos( $first_string, '$' ) === 0
&& $has_post
) {
$variable_name = substr( $first_string, 1 ); // omit dollar sign
if ( isset( $atts[$variable_name] ) ) {
$first_string = get_post_meta( $post->ID, $atts[$variable_name], true );
} else {
$first_string = '';
$general_variables_logging_extra .= "\n\tERROR: Key " . $variable_name . " does not point to a valid attribute in the wpv-if shortcode";
}
}
if ( strpos( $second_string, '$' ) === 0 && $has_post ) {
$variable_name = substr( $second_string, 1 );
if ( isset( $atts[$variable_name] ) ) {
$second_string = get_post_meta( $post->ID, $atts[$variable_name], true );
} else {
$second_string = '';
$general_variables_logging_extra .= "\n\tERROR: Key " . $variable_name . " does not point to a valid attribute in the wpv-if shortcode";
}
}
// don't do string comparison if variables are numbers
if (
! (
is_numeric( $first_string )
&& is_numeric( $second_string )
)
) {
// compare string and return true or false
$compared_str_result = wpv_condition_compare_strings( $first_string, $second_string, $math_sign );
if ( $compared_str_result ) {
$evaluate = str_replace( $matches[0][$i], '1=1', $evaluate );
} else {
$evaluate = str_replace( $matches[0][$i], '1=0', $evaluate );
}
} else {
$evaluate = str_replace( $matches[1][$i], $first_string, $evaluate );
$evaluate = str_replace( $matches[5][$i], $second_string, $evaluate );
}
$logging_string .= "\nAfter replacing " . ( $i + 1 ) . " general variables and comparing strings: " . $evaluate . $general_variables_logging_extra;
}
}
// Evaluate comparisons when at least one of them is numeric
$strings_count = preg_match_all( '/(\'[^\']*\')/', $evaluate, $matches );
if (
$strings_count
&& $strings_count > 0
) {
for ( $i = 0; $i < $strings_count; $i++ ) {
$string = $matches[1][$i];
// remove single quotes from string literals to get value only
$string = ( strpos( $string, '\'' ) === 0 ) ? substr( $string, 1, strlen( $string ) - 2 ) : $string;
if ( is_numeric( $string ) ) {
$evaluate = str_replace( $matches[1][$i], $string, $evaluate );
$logging_string .= "\nAfter matching " . ( $i + 1 ) . " numeric strings into real numbers: " . $evaluate;
$logging_string .= "\n\tMatched " . $matches[1][$i] . " to " . $string;
}
}
}
// Evaluate all remaining variables
if ( $has_post ) {
$count = preg_match_all( '/\$(\w+)/', $evaluate, $matches );
// replace all variables with their values listed as shortcode parameters
if (
$count
&& $count > 0
) {
$logging_string .= "\nRemaining variables: " . var_export( $matches[1], true );
// sort array by length desc, fix str_replace incorrect replacement
// wpv_sort_matches_by_length belongs to common/functions.php
$matches[1] = wpv_sort_matches_by_length( $matches[1] );
foreach ( $matches[1] as $match ) {
if ( isset( $atts[$match] ) ) {
$meta = get_post_meta( $post->ID, $atts[$match], true );
if ( empty( $meta ) ) {
$meta = "0";
}
} else {
$meta = "0";
}
$evaluate = str_replace( '$' . $match, $meta, $evaluate );
$logging_string .= "\nAfter replacing remaining variables: " . $evaluate;
}
}
}
$logging_string .= "\n--------------------\nEnd evaluated expression: "
. $evaluate
. "\n--------------------";
$wplogger->log( $logging_string, WPLOG_DEBUG );
// evaluate the prepared expression using the custom eval script
// wpv_condition_evaluate_expression
$result = wpv_condition_evaluate_expression( $evaluate );
if ( $has_post ) {
do_action( 'wpv_condition_end', $post );
}
$return = array();
if ( is_bool( $result ) ) {
$return['result'] = $result;
$return['debug'] = $logging_string;
} else {
$return['result'] = ! $condition;
$return['debug'] = $logging_string . "\n" . $result;
}
return $return;
}
public static function extractVariables( $evaluate, $atts, $has_post, $id ){
$logging_string = '';
// Evaluate quoted variables that are to be used as strings
// '$f1' will replace $f1 with the custom field value
$strings_count = preg_match_all( '/(\'[\$\w^\']*\')/', $evaluate, $matches );
if (
$strings_count
&& $strings_count > 0
) {
for ( $i = 0; $i < $strings_count; $i++ ) {
$string = $matches[1][$i];
// remove single quotes from string literals to get value only
$string = (strpos( $string, '\'' ) === 0) ? substr( $string, 1, strlen( $string ) - 2 ) : $string;
if ( strpos( $string, '$' ) === 0 ) {
$quoted_variables_logging_extra = '';
$variable_name = substr( $string, 1 ); // omit dollar sign
if ( isset( $atts[$variable_name] ) ) {
$string = get_post_meta( $id, $atts[$variable_name], true );
$evaluate = str_replace( $matches[1][$i], "'" . $string . "'", $evaluate );
} else {
$evaluate = str_replace( $matches[1][$i], "", $evaluate );
$quoted_variables_logging_extra = "\n\tERROR: Key " . $matches[1][$i] . " does not point to a valid attribute in the wpv-if shortcode: expect parsing errors";
}
$logging_string .= "\nAfter replacing " . ( $i + 1 ) . " quoted variables: " . $evaluate . $quoted_variables_logging_extra;
}
}
}
// Evaluate non-quoted variables, by de-quoting the quoted ones if needed
$strings_count = preg_match_all( '/((\$\w+)|(\'[^\']*\'))\s*([\!<>\=|lt|lte|eq|ne|gt|gte]+)\s*((\$\w+)|(\'[^\']*\'))/',
$evaluate, $matches );
// get all string comparisons - with variables and/or literals
if (
$strings_count
&& $strings_count > 0
) {
for ( $i = 0; $i < $strings_count; $i++ ) {
// get both sides and sign
$first_string = $matches[1][$i];
$second_string = $matches[5][$i];
$math_sign = $matches[4][$i];
$general_variables_logging_extra = '';
// remove single quotes from string literals to get value only
$first_string = ( strpos( $first_string, '\'' ) === 0 ) ? substr( $first_string, 1, strlen( $first_string ) - 2 ) : $first_string;
$second_string = ( strpos( $second_string, '\'' ) === 0 ) ? substr( $second_string, 1, strlen( $second_string ) - 2 ) : $second_string;
$general_variables_logging_extra .= "\n\tComparing " . $first_string . " to " . $second_string;
// replace variables with text representation
if (
strpos( $first_string, '$' ) === 0
&& $has_post
) {
$variable_name = substr( $first_string, 1 ); // omit dollar sign
if ( isset( $atts[$variable_name] ) ) {
$first_string = get_post_meta( $id, $atts[$variable_name], true );
} else {
$first_string = '';
$general_variables_logging_extra .= "\n\tERROR: Key " . $variable_name . " does not point to a valid attribute in the wpv-if shortcode";
}
}
if ( strpos( $second_string, '$' ) === 0 && $has_post ) {
$variable_name = substr( $second_string, 1 );
if ( isset( $atts[$variable_name] ) ) {
$second_string = get_post_meta( $id, $atts[$variable_name], true );
} else {
$second_string = '';
$general_variables_logging_extra .= "\n\tERROR: Key " . $variable_name . " does not point to a valid attribute in the wpv-if shortcode";
}
}
$evaluate = (is_numeric( $first_string ) ? str_replace( $matches[1][$i], $first_string, $evaluate ) : str_replace( $matches[1][$i], "'$first_string'", $evaluate ));
$evaluate = (is_numeric( $first_string ) ? str_replace( $matches[5][$i], $second_string, $evaluate ) : str_replace( $matches[5][$i], "'$second_string'", $evaluate ));
$logging_string .= "\nAfter replacing " . ( $i + 1 ) . " general variables and comparing strings: " . $evaluate . $general_variables_logging_extra;
}
}
// Evaluate comparisons when at least one of them is numeric
$strings_count = preg_match_all( '/(\'[^\']*\')/', $evaluate, $matches );
if (
$strings_count
&& $strings_count > 0
) {
for ( $i = 0; $i < $strings_count; $i++ ) {
$string = $matches[1][$i];
// remove single quotes from string literals to get value only
$string = ( strpos( $string, '\'' ) === 0 ) ? substr( $string, 1, strlen( $string ) - 2 ) : $string;
if ( is_numeric( $string ) ) {
$evaluate = str_replace( $matches[1][$i], $string, $evaluate );
$logging_string .= "\nAfter matching " . ( $i + 1 ) . " numeric strings into real numbers: " . $evaluate;
$logging_string .= "\n\tMatched " . $matches[1][$i] . " to " . $string;
}
}
}
// Evaluate all remaining variables
if ( $has_post ) {
$count = preg_match_all( '/\$(\w+)/', $evaluate, $matches );
// replace all variables with their values listed as shortcode parameters
if (
$count
&& $count > 0
) {
$logging_string .= "\nRemaining variables: " . var_export( $matches[1], true );
// sort array by length desc, fix str_replace incorrect replacement
// wpv_sort_matches_by_length belongs to common/functions.php
$matches[1] = wpv_sort_matches_by_length( $matches[1] );
foreach ( $matches[1] as $match ) {
if ( isset( $atts[$match] ) ) {
$meta = get_post_meta( $id, $atts[$match], true );
if ( empty( $meta ) ) {
$meta = "''";
}
} else {
$meta = "0";
}
$evaluate = str_replace( '$' . $match, $meta, $evaluate );
$logging_string .= "\nAfter replacing remaining variables: " . $evaluate;
}
}
}
return array( $evaluate, $logging_string);
}
