- substr: documentation ( source)
<?php
function foo($path) {
if ($path && $path[0] = '/') {
$path = substr($path, 1);
}
$url = 'http://' . 'www.example.com/' . $path;
echo $url, PHP_EOL;
return $url;
}
foo('/abc');
foo('abc');
foo('/');
foo('');