PHP VERSION: 7.0.26

preg_replace_callback_array_orig.php

<?php
// preg_replace_callback_array()
// uses preg_replace_callback_array() to update old version of phpLDAPadmin
// looking for instances of "preg_replace('/xxx/e', yyy, zzz)"

// get name of all files in $lib
$lib __DIR__ '/phpLDAPadmin/lib/';
$objects = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($lib),
                                         
RecursiveIteratorIterator::SELF_FIRST);
$count 0;
foreach(
$objects as $name => $fileObj){
    
// his is the filename
    
if ($fileObj->isFile()) {
        
$contents file($name);
        echo 
'Processing: ' $name PHP_EOL;
        
$flag FALSE;
        
preg_replace_callback_array(
            [   
"!preg_replace.*?\/e!" =>
                function (
$match) use (&$flag) { $flag TRUE; },
                
// 1   2                 3          4        5
                
"!(.*)(preg_replace)\(\'(.*?\/e)\',(\".*?\")(.*)!" =>
                function (
$match) use ($flag) {
                    if (
$flag) {
                        echo 
'OLD: ' PHP_EOL $match[0] . PHP_EOL;
                        
$replace $match[1]
                                . 
"preg_replace_callback('"
                                
substr($match[3], 0, -1)
                                . 
"',"
                                
'function ($a) { return "\'" . chr(hexdec($a)) . "\'"; }'
                                
$match[5] . PHP_EOL;
                        echo 
'NEW:' PHP_EOL $replace PHP_EOL;
                    }
                },
            ],
            
$contents
        
);
    }
}



Output


Processing: /homepages/22/d414837955/htdocs/repo/php7_examples/phpLDAPadmin/lib/ds_ldap.php
Processing: /homepages/22/d414837955/htdocs/repo/php7_examples/phpLDAPadmin/lib/functions.php
SOURCE CODE