private function f($f, $x)
{
$f = $this->add_dolar($f);
eval("\$fx = \"{$f}\";");
$eq = new eqEOS();
return $eq->solveIF($fx);
}
function sp_solve($equation, $vars, $precision = 0, $default = '-')
{
if ($equation == null) {
return $default;
}
if (strpos($equation, '$gamesback') !== false) {
// Return placeholder
return $default;
} elseif (strpos($equation, '$streak') !== false) {
// Return direct value
return sp_array_value($vars, 'streak', $default);
} elseif (strpos($equation, '$last5') !== false) {
// Return imploded string
$last5 = sp_array_value($vars, 'last5', array(0));
if (array_sum($last5) > 0) {
return implode('-', $last5);
} else {
return $default;
}
} elseif (strpos($equation, '$last10') !== false) {
// Return imploded string
$last10 = sp_array_value($vars, 'last10', array(0));
if (array_sum($last10) > 0) {
return implode('-', $last10);
} else {
return $default;
}
} elseif (strpos($equation, '$homerecord') !== false) {
// Return imploded string
$homerecord = sp_array_value($vars, 'homerecord', array(0));
return implode('-', $homerecord);
} elseif (strpos($equation, '$awayrecord') !== false) {
// Return imploded string
$awayrecord = sp_array_value($vars, 'awayrecord', array(0));
return implode('-', $awayrecord);
}
// Remove unnecessary variables from vars before calculating
unset($vars['gamesback']);
unset($vars['streak']);
unset($vars['last5']);
unset($vars['last10']);
if (sp_array_value($vars, 'eventsplayed', 0) <= 0) {
return $default;
}
// Equation Operating System
if (!class_exists('phpStack')) {
include_once SP()->plugin_path() . '/includes/libraries/class-phpstack.php';
}
if (!class_exists('eqEOS')) {
include_once SP()->plugin_path() . '/includes/libraries/class-eqeos.php';
}
$eos = new eqEOS();
// Remove spaces from equation
$equation = str_replace(' ', '', $equation);
// Create temporary equation replacing operators with spaces
$temp = str_replace(array('+', '-', '*', '/', '(', ')'), ' ', $equation);
// Check if each variable part is in vars
$parts = explode(' ', $temp);
foreach ($parts as $key => $value) {
if (substr($value, 0, 1) == '$') {
if (!array_key_exists(preg_replace("/[^a-z0-9_]/", '', $value), $vars)) {
return 0;
}
}
}
// Remove space between equation parts
$equation = str_replace(' ', '', $equation);
// Initialize Subequations
$subequations = array($equation);
// Find all equation parts contained in parentheses
if (preg_match_all('~\\((.*?)\\)~', $equation, $results)) {
foreach (sp_array_value($results, 1, array()) as $result) {
if (!empty($result)) {
$subequations[] = $result;
}
}
}
// Initialize subequation
$subequation = $equation;
// Check each subequation separated by division
foreach ($subequations as $subequation) {
while ($pos = strpos($subequation, '/')) {
$subequation = substr($subequation, $pos + 1);
// Make sure paretheses match
if (substr_count($subequation, '(') === substr_count($subequation, ')')) {
// Return zero if denominator is zero
if ($eos->solveIF($subequation, $vars) == 0) {
return 0;
}
}
}
}
// Return solution
return number_format($eos->solveIF(str_replace(' ', '', $equation), $vars), $precision, '.', '');
}
function ninja_forms_calc_field_loop($field_id, $calc_eq = '', $result = '')
{
global $ninja_forms_loading, $ninja_forms_processing;
if (isset($ninja_forms_loading)) {
$field_settings = $ninja_forms_loading->get_field_settings($field_id);
} else {
$field_settings = $ninja_forms_processing->get_field_settings($field_id);
}
$calc_data = $field_settings['data'];
// Figure out which method we are using to calculate this field.
if (isset($calc_data['calc_method'])) {
$calc_method = $calc_data['calc_method'];
} else {
$calc_method = 'auto';
}
// Get our advanced field op settings if they exist.
if (isset($calc_data['calc'])) {
$calc_fields = $calc_data['calc'];
} else {
$calc_fields = array();
}
// Get our calculation equation if it exists.
if (isset($calc_data['calc_eq'])) {
$calc_eq = $calc_data['calc_eq'];
} else {
$calc_eq = array();
}
if (isset($ninja_forms_loading)) {
$form_id = $ninja_forms_loading->get_form_ID();
$all_fields = $ninja_forms_loading->get_all_fields();
} else {
$form_id = $ninja_forms_processing->get_form_ID();
$all_fields = $ninja_forms_processing->get_all_fields();
}
// Figure out if there is a sub_total and a tax field. If there are, and this is a total field set to calc_method auto, we're using an equation, not auto.
$tax = false;
$sub_total = false;
foreach ($all_fields as $f_id => $user_value) {
if (isset($ninja_forms_loading)) {
$field = $ninja_forms_loading->get_field_settings($f_id);
} else {
$field = $ninja_forms_processing->get_field_settings($f_id);
}
$field_value = $user_value;
$data = $field['data'];
if ($field['type'] == '_tax') {
// There is a tax field; save its field_id.
$tax = $field['id'];
} else {
if (isset($data['payment_sub_total']) and $data['payment_sub_total'] == 1) {
// There is a sub_total field; save its field_id.
$sub_total = $field['id'];
}
}
}
// If the tax and sub_total have been found, and this is a total field set to auto, change the calc_method and calc_eq.
if ($tax and $sub_total and isset($calc_data['payment_total']) and $calc_data['payment_total'] == 1 and $calc_method == 'auto') {
$calc_method = 'eq';
if (isset($ninja_forms_loading)) {
$tax_rate = $ninja_forms_loading->get_field_value($tax);
} else {
$tax_rate = $ninja_forms_processing->get_field_value($tax);
}
if (strpos($tax_rate, "%") !== false) {
$tax_rate = str_replace("%", "", $tax_rate);
$tax_rate = $tax_rate / 100;
}
$calc_eq = 'field_' . $sub_total . ' + ( field_' . $sub_total . ' * ' . $tax_rate . ' )';
}
// Figure out how many calculation fields we have and run
foreach ($all_fields as $f_id => $user_value) {
if (isset($ninja_forms_loading)) {
$field = $ninja_forms_loading->get_field_settings($f_id);
$field_value = $ninja_forms_loading->get_field_value($f_id);
} else {
$field = $ninja_forms_processing->get_field_settings($f_id);
$field_value = $ninja_forms_processing->get_field_value($f_id);
}
$field_data = $field['data'];
if ($f_id != $field_id) {
switch ($calc_method) {
case 'auto':
// We are automatically totalling the fields that have a calc_auto_include set to 1.
if (isset($field_data['calc_auto_include']) and $field_data['calc_auto_include'] == 1) {
if ($field['type'] == '_calc') {
$calc_value = ninja_forms_calc_field_loop($field['id'], '', $result);
} else {
$calc_value = ninja_forms_field_calc_value($field['id'], $field_value, $calc_method);
}
if ($calc_value !== false) {
$result = ninja_forms_calc_evaluate('add', $result, $calc_value);
}
}
break;
case 'fields':
// We are performing a specific set of operations on a set of fields.
if (is_array($calc_fields)) {
foreach ($calc_fields as $c) {
if ($c['field'] == $field['id']) {
if ($field['type'] == '_calc') {
$result = ninja_forms_calc_field_loop($field['id'], '', $result);
} else {
$calc_value = ninja_forms_field_calc_value($field['id'], $field_value, $calc_method);
if ($calc_value !== false) {
$result = ninja_forms_calc_evaluate($c['op'], $result, $calc_value);
}
}
}
}
}
break;
case 'eq':
if (preg_match("/\\bfield_" . $field['id'] . "\\b/i", $calc_eq)) {
if ($field['type'] == '_calc') {
$calc_value = ninja_forms_calc_field_loop($field['id'], $calc_eq, $result);
} else {
$calc_value = ninja_forms_field_calc_value($field['id'], $field_value, $calc_method);
}
if ($calc_value !== false) {
$calc_eq = preg_replace('/\\bfield_' . $field['id'] . '\\b/', $calc_value, $calc_eq);
}
}
break;
}
}
}
if ($calc_method == 'eq') {
$eq = new eqEOS();
$result = $eq->solveIF($calc_eq);
}
if ($result == '') {
$result = 0;
}
return $result;
}
function sp_solve($equation, $vars, $precision = 0)
{
if ($equation == null) {
return '-';
}
if (strpos($equation, '$streak') !== false) {
// Return direct value
return sp_array_value($vars, 'streak', '-');
} elseif (strpos($equation, '$last5') !== false) {
// Return imploded string
$last5 = sp_array_value($vars, 'last5', array(0));
if (array_sum($last5) > 0) {
return implode('-', $last5);
} else {
return '-';
}
} elseif (strpos($equation, '$last10') !== false) {
// Return imploded string
$last10 = sp_array_value($vars, 'last10', array(0));
if (array_sum($last10) > 0) {
return implode('-', $last10);
} else {
return '-';
}
}
// Remove unnecessary variables from vars before calculating
unset($vars['streak']);
unset($vars['last5']);
unset($vars['last10']);
if (sp_array_value($vars, 'eventsplayed', 0) <= 0) {
return '-';
}
// Equation Operating System
if (!class_exists('phpStack')) {
include_once SP()->plugin_path() . '/includes/libraries/class-phpstack.php';
}
if (!class_exists('eqEOS')) {
include_once SP()->plugin_path() . '/includes/libraries/class-eqeos.php';
}
$eos = new eqEOS();
// Clearance to begin calculating remains true if all equation variables are in vars
$clearance = true;
// Check if each variable part is in vars
$parts = explode(' ', $equation);
foreach ($parts as $key => $value) {
if (substr($value, 0, 1) == '$') {
if (!array_key_exists(preg_replace("/[^a-z]/", '', $value), $vars)) {
return 0;
}
}
}
// Remove space between equation parts
$equation = str_replace(' ', '', $equation);
// Check if denominator is zero
$pos = strpos($equation, '/');
if ($pos) {
if ($eos->solveIF(substr($equation, $pos + 1), $vars) == 0) {
return 0;
}
}
// Return solution
return number_format($eos->solveIF(str_replace(' ', '', $equation), $vars), $precision, '.', '');
}