- Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- string(3) "abc" string(6) "a1b2c3"
<?php
$string = 'abc';
var_dump($string, preg_replace_callback(
'/(.)/',
function ($m) {
static $counter = 1;
return $m[1] . $counter++;
},
$string
));