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@ 2017-07-10T09:59:52Z

<?php

function trimo(
    string $string,
    string $additionalTrimChars = ''
): string {
    return trim(trim($string, $additionalTrimChars));
}

$key = ' = hasen';
$add = '=';

var_dump(trim($key));
var_dump(trim($key, $add));
var_dump(trim(trim($key, $add)));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
trim: documentation ( source)

preferences:dark modelive preview

42.87 ms | 402 KiB | 5 Q