xref: /dokuwiki/inc/compatibility.php (revision 92b9f19672bc9424b0bd0bdd7457d7a850f5ea90)
16589c60cSAndreas Gohr<?php
26589c60cSAndreas Gohr/**
36589c60cSAndreas Gohr * compatibility functions
46589c60cSAndreas Gohr *
56589c60cSAndreas Gohr * This file contains a few functions that might be missing from the PHP build
66589c60cSAndreas Gohr */
76589c60cSAndreas Gohr
86589c60cSAndreas Gohrif(!function_exists('ctype_space')) {
96589c60cSAndreas Gohr    /**
106589c60cSAndreas Gohr     * Check for whitespace character(s)
116589c60cSAndreas Gohr     *
126589c60cSAndreas Gohr     * @see ctype_space
136589c60cSAndreas Gohr     * @param string $text
146589c60cSAndreas Gohr     * @return bool
156589c60cSAndreas Gohr     */
166589c60cSAndreas Gohr    function ctype_space($text) {
176589c60cSAndreas Gohr        if(!is_string($text)) return false; #FIXME original treats between -128 and 255 inclusive as ASCII chars
186589c60cSAndreas Gohr        if(trim($text) === '') return true;
196589c60cSAndreas Gohr        return false;
206589c60cSAndreas Gohr    }
216589c60cSAndreas Gohr}
226589c60cSAndreas Gohr
236589c60cSAndreas Gohrif(!function_exists('ctype_digit')) {
246589c60cSAndreas Gohr    /**
256589c60cSAndreas Gohr     * Check for numeric character(s)
266589c60cSAndreas Gohr     *
276589c60cSAndreas Gohr     * @see ctype_digit
286589c60cSAndreas Gohr     * @param string $text
296589c60cSAndreas Gohr     * @return bool
306589c60cSAndreas Gohr     */
316589c60cSAndreas Gohr    function ctype_digit($text) {
326589c60cSAndreas Gohr        if(!is_string($text)) return false; #FIXME original treats between -128 and 255 inclusive as ASCII chars
336589c60cSAndreas Gohr        if(preg_match('/^\d+$/', $text)) return true;
346589c60cSAndreas Gohr        return false;
356589c60cSAndreas Gohr    }
366589c60cSAndreas Gohr}
37*92b9f196SAndreas Gohr
38*92b9f196SAndreas Gohrif(!function_exists('gzopen') && function_exists('gzopen64')) {
39*92b9f196SAndreas Gohr    /**
40*92b9f196SAndreas Gohr     * work around for PHP compiled against certain zlib versions #865
41*92b9f196SAndreas Gohr     *
42*92b9f196SAndreas Gohr     * @link http://stackoverflow.com/questions/23417519/php-zlib-gzopen-not-exists
43*92b9f196SAndreas Gohr     *
44*92b9f196SAndreas Gohr     * @param string    $filename
45*92b9f196SAndreas Gohr     * @param string    $mode
46*92b9f196SAndreas Gohr     * @param int $use_include_path
47*92b9f196SAndreas Gohr     * @return mixed
48*92b9f196SAndreas Gohr     */
49*92b9f196SAndreas Gohr    function gzopen($filename, $mode, $use_include_path = 0) {
50*92b9f196SAndreas Gohr        return gzopen64($filename, $mode, $use_include_path);
51*92b9f196SAndreas Gohr    }
52*92b9f196SAndreas Gohr}