<?php
/**
* If you use mbstring.func_overload, or the server you are running on has it enabled, you are in trouble.
* This class will help overcome that, by provide alternative functions to work around it.
*
* see readme.markdown for further details.
*
* @author A. Grandt <php@grandt.com>
* @copyright 2014 A. Grandt
* @license GNU LGPL 2.1
*/
namespace com\grandt;
class BinString {
const VERSION = 1.00;
private $has_mbstring = FALSE;
private $has_mb_shadow = FALSE;
private $has_mb_mail_overload = FALSE;
private $has_mb_string_overload = FALSE;
private $has_mb_regex_overload = FALSE;
/**
* mbstring.func_overload has an undocumented feature, to retain access to the original function.
* As it is undocumented, it is uncertain if it'll remain, therefore it's being made an optional.
*
* @var boolean
*/
public $USE_MB_ORIG = false;
function __construct() {
$this->has_mbstring = extension_loaded('mbstring');
$this->has_mb_shadow = (int) ini_get('mbstring.func_overload');
$this->has_mb_mail_overload = $this->has_mbstring && ($this->has_mb_shadow & 1);
$this->has_mb_string_overload = $this->has_mbstring && ($this->has_mb_shadow & 2);
$this->has_mb_regex_overload = $this->has_mbstring && ($this->has_mb_shadow & 4);
}
public function getPHPVersionId() {
if (!defined('PHP_VERSION_ID')) {
$version = explode('.', PHP_VERSION);
define('PHP_VERSION_ID', ($version[0] * 10000 + $version[1] * 100 + $version[2]));
}
return PHP_VERSION_ID;
}
/**
* @link http://php.net/manual/en/function.mail.php
*/
public function _mail($to, $subject, $message, $additional_headers = null, $additional_parameters = null) {
if ($this->has_mb_mail_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_mail($to, $subject, $message, $additional_headers, $additional_parameters);
}
$lang = mb_language(); // get current language
mb_language("en"); // Force encoding to iso8859-1
$rv = mb_send_mail($to, $subject, $message, $additional_headers, $additional_parameters);
mb_language($lang);
return $rv;
} else {
return mail($to, $subject, $message, $additional_headers, $additional_parameters);
}
}
/**
* @link http://php.net/manual/en/function.strlen.php
*/
public function _strlen($string) {
if ($this->has_mb_string_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_strlen($string);
}
return mb_strlen($string, 'latin1');
} else {
return strlen($string);
}
}
/**
* @link http://php.net/manual/en/function.strpos.php
*/
public function _strpos($haystack, $needle, $offset = 0) {
if ($this->has_mb_string_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_strpos($haystack, $needle, $offset);
}
return mb_strpos($haystack, $needle, $offset, 'latin1');
} else {
return strpos($haystack, $needle, $offset);
}
}
/**
* @link http://php.net/manual/en/function.strrpos.php
*/
public function _strrpos($haystack, $needle, $offset = 0) {
if ($this->has_mb_string_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_strrpos($haystack, $needle, $offset);
}
return mb_strrpos($haystack, $needle, $offset, 'latin1');
} else {
return strrpos($haystack, $needle, $offset);
}
}
/**
* @link http://php.net/manual/en/function.stripos.php
*/
public function _stripos($haystack, $needle, $offset = 0) {
if ($this->getPHPVersionId() >= 50200 && $this->has_mb_string_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_stripos($haystack, $needle, $offset);
}
return mb_stripos($haystack, $needle, $offset, 'latin1');
} else {
return stripos($haystack, $needle, $offset);
}
}
/**
* @link http://php.net/manual/en/function.strripos.php
*/
public function _strripos($haystack, $needle, $offset = 0) {
if ($this->getPHPVersionId() >= 50200 && $this->has_mb_string_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_strripos($haystack, $needle, $offset);
}
return mb_strripos($haystack, $needle, $offset, 'latin1');
} else {
return strripos($haystack, $needle, $offset);
}
}
/**
* @link http://php.net/manual/en/function.strstr.php
*/
public function _strstr($haystack, $needle, $before_needle = false) {
if ($this->getPHPVersionId() >= 50200 && $this->has_mb_string_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_strstr($haystack, $needle, $before_needle);
}
return mb_strstr($haystack, $needle, $before_needle, 'latin1');
} else {
return strstr($haystack, $needle, $before_needle);
}
}
/**
* @link http://php.net/manual/en/function.stristr.php
*/
public function _stristr($haystack, $needle, $before_needle = false) {
if ($this->getPHPVersionId() >= 50200 && $this->has_mb_string_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_stristr($haystack, $needle, $before_needle);
}
return mb_stristr($haystack, $needle, $before_needle, 'latin1');
} else {
return stristr($haystack, $needle, $before_needle);
}
}
/**
* @link http://php.net/manual/en/function.strrchr.php
*/
public function _strrchr($haystack, $needle) {
if ($this->getPHPVersionId() >= 50200 && $this->has_mb_string_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_strrchr($haystack, $needle);
}
return mb_strrchr($haystack, $needle, 'latin1');
} else {
return strrchr($haystack, $needle);
}
}
/**
* @link http://php.net/manual/en/function.substr.php
*/
public function _substr($string, $start, $length = null) {
if ($this->has_mb_string_overload) {
if ($this->USE_MB_ORIG) {
if (func_num_args() == 2) { // Kludgry hack, as PHP substr is lobotomized.
return mb_orig_substr($string, $start);
}
return mb_orig_substr($string, $start, $length);
}
if (func_num_args() == 2) { // Kludgry hack, as mb_substr is lobotomized, AND broken.
return mb_substr($string, $start, mb_strlen($string, 'latin1'), 'latin1');
}
return mb_substr($string, $start, $length, 'latin1');
} else {
if (func_num_args() == 2) { // Kludgry hack, as PHP substr is lobotomized.
return substr($string, $start);
}
return substr($string, $start, $length);
}
}
/**
* @link http://php.net/manual/en/function.strtolower.php
*/
public function _strtolower($string) {
if ($this->has_mb_string_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_strtolower($string);
}
return mb_strtolower($string, 'latin1');
} else {
return strtolower($string);
}
}
/**
* @link http://php.net/manual/en/function.strtoupper.php
*/
public function _strtoupper($string) {
if ($this->has_mb_string_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_strtoupper($string);
}
return mb_strtoupper($string, 'latin1');
} else {
return strtoupper($string);
}
}
/**
* @link http://php.net/manual/en/function.substr_count.php
*/
public function _substr_count($haystack, $needle, $offset = 0, $length = null) {
if ($this->has_mb_string_overload) {
if ($this->USE_MB_ORIG) {
if (func_num_args() > 3) { // Kludgry hack, as PHP substr_count is lobotomized.
return mb_orig_substr_count($haystack, $needle, $offset, $length);
}
return mb_orig_substr_count($haystack, $needle, $offset);
}
return mb_substr_count($haystack, $needle, 'latin1');
} else {
if (func_num_args() > 3) { // Kludgry hack, as PHP substr_count is lobotomized.
return substr_count($haystack, $needle, $offset, $length);
}
return substr_count($haystack, $needle, $offset);
}
}
/**
* @link http://php.net/manual/en/function.ereg.php
* @deprecated ereg_* functions are deprecated in PHP 5.3 onwards, use the PCRE preg_* instead.
*/
public function _ereg($pattern, $string, array &$regs) {
if ($this->has_mb_regex_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_ereg($pattern, $string, $regs);
}
$enc = mb_regex_encoding(); // get current encoding
mb_regex_encoding("latin1"); // Force encoding to iso8859-1
$rv = mb_ereg($pattern, $string, $regs);
mb_regex_encoding($enc);
return $rv;
} else {
return ereg($pattern, $string, $regs);
}
}
/**
* @link http://php.net/manual/en/function.eregi.php
* @deprecated ereg_* functions are deprecated in PHP 5.3 onwards, use the PCRE preg_* instead.
*/
public function _eregi($pattern, $string, array &$regs) {
if ($this->has_mb_regex_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_eregi($pattern, $string, $regs);
}
$enc = mb_regex_encoding(); // get current encoding
mb_regex_encoding("latin1"); // Force encoding to iso8859-1
$rv = mb_eregi($pattern, $string, $regs);
mb_regex_encoding($enc);
return $rv;
} else {
return eregi($pattern, $string, $regs);
}
}
/**
* @link http://php.net/manual/en/function.ereg_replace.php
* @deprecated ereg_* functions are deprecated in PHP 5.3 onwards, use the PCRE preg_* instead.
*/
public function _ereg_replace($pattern, $replacement, $string, $mb_specific_option = "msr") {
if ($this->has_mb_regex_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_ereg_replace($pattern, $replacement, $string);
}
$enc = mb_regex_encoding(); // get current encoding
mb_regex_encoding("latin1"); // Force encoding to iso8859-1
$rv = mb_ereg_replace($pattern, $replacement, $string, $mb_specific_option);
mb_regex_encoding($enc);
return $rv;
} else {
return ereg_replace($pattern, $replacement, $string);
}
}
/**
* @link http://php.net/manual/en/function.eregi_replace.php
* @deprecated ereg_* functions are deprecated in PHP 5.3 onwards, use the PCRE preg_* instead.
*/
public function _eregi_replace($pattern, $replacement, $string, $mb_specific_option = "msri") {
if ($this->has_mb_regex_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_eregi_replace($pattern, $replacement, $string);
}
$enc = mb_regex_encoding(); // get current encoding
mb_regex_encoding("latin1"); // Force encoding to iso8859-1
$rv = mb_eregi_replace($pattern, $replacement, $string, $mb_specific_option);
mb_regex_encoding($enc);
return $rv;
} else {
return eregi_replace($pattern, $replacement, $string);
}
}
/**
* @link http://php.net/manual/en/function.split.php
* @deprecated Split is deprecated in PHP 5.3 onwards, use preg_split instead. It'll bypass mb_* anyway.
*/
public function _split($pattern, $string, $limit = -1) {
if ($this->has_mb_regex_overload) {
if ($this->USE_MB_ORIG) {
return mb_orig_split($pattern, $string, $limit);
}
$enc = mb_regex_encoding(); // get current encoding
mb_regex_encoding("latin1"); // Force encoding to iso8859-1
$rv = mb_split($pattern, $string, $limit);
mb_regex_encoding($enc);
return $rv;
} else {
return split($pattern, $string, $limit);
}
}
/**
* Checks if the $haystack starts with the text in the $needle.
* Case sensitive.
* @param string $haystack
* @param string $needle
*
* @return bool
*/
public function startsWith($haystack, $needle) {
return $needle === '' || $this->_strpos($haystack, $needle) === 0;
}
/**
* Checks if the $haystack ends with the text in the $needle.
* Case sensitive.
*
* @param string $haystack
* @param string $needle
*
* @return bool
*/
public function endsWith($haystack, $needle) {
return $needle === '' || $this->_substr($haystack, -$this->_strlen($needle)) === $needle;
}
}