/**
* Restore a string to an array.
*
* PHP API Extension
*
* Example
* <code>
* $string = 'A,B,indC:C,(0:D,1:E),indF:F'
* $array = string_to_array($string)
* <code>
* Output:
* <code>
* array('A', 'B', 'indC' => 'C', array('D', 'E'), 'indF'=>'F');
* </code>
*
* @access public
* @static
* @param string $string
* @param string $hashsep A character to be used as a hash key and val seperator
* @param string $elemsep A character to be used as a elememt separator
* @param string $openarray A character to be used as an open bracket of an array
* @param string $closearray A character to be used as a close bracket of an array
* @param boolean $decode Performe decode key/val
* @return array
* @see array_to_string
* @version $Id: v 1.3 2008-07-15 11:14:46 sonots $
*/
function string_to_array($string, $hashsep = ':', $elemsep = ',', $openarray = '(', $closearray = ')', $decode = true)
{
$result = array();
$delims = $hashsep . $elemsep . $openarray . $closearray;
if ($string === '') {
return $result;
}
/// parse the first element
$hashsep_pos = strpos($string, $hashsep);
$elemsep_pos = strpos($string, $elemsep);
$openarray_pos = strpos($string, $openarray);
// there is a key or not for the 1st element
if ($hashsep_pos !== false && ($elemsep_pos === false || $hashsep_pos < $elemsep_pos) && ($openarray_pos === false || $hashsep_pos < $openarray_pos)) {
$key = substr($string, 0, $hashsep_pos);
$key = $decode ? sonots::urldecode($key, $delims) : $key;
$string = trim(substr($string, $hashsep_pos + 1));
} else {
$key = null;
}
$openarray_pos = strpos($string, $openarray);
if ($openarray_pos === false || $openarray_pos > 0) {
// hash val is not an array
$elemsep_pos = strpos($string, $elemsep);
if ($elemsep_pos === false) {
$val = $decode ? sonots::urldecode($string, $delims) : $string;
$string = "";
} else {
$val = substr($string, 0, $elemsep_pos);
$val = $decode ? sonots::urldecode($val, $delims) : $val;
$string = substr($string, $elemsep_pos + 1);
}
} elseif ($openarray_pos == 0) {
// hash val is an array
$string = substr($string, 1);
$num_openarray = 1;
// search where is a corresponding closet
$string_char_array = str_split($string);
for ($index = 0; count($string_char_array); $index++) {
if ($string_char_array[$index] == $openarray) {
$num_openarray++;
} else {
if ($string_char_array[$index] == $closearray) {
$num_openarray--;
}
}
if ($num_openarray == 0) {
break;
}
}
$val = sonots::string_to_array(substr($string, 0, $index), $hashsep, $elemsep, $openarray, $closearray, $decode);
$string = substr($string, $index + 2);
}
if (is_null($key)) {
$result[] = $val;
} else {
$result[$key] = $val;
}
/// next element
if (strlen($string) != 0) {
$result = array_merge($result, sonots::string_to_array($string, $hashsep, $elemsep, $openarray, $closearray, $decode));
}
return $result;
}
