Question

How to find all non-repeated character in a string with PHP

Answer 1

function getAllNonRepeatedCharacter($s) {
    $chs = "";
    for ($i = 0; $i <= strlen($s) - 1; $i++) {
        if (substr_count($s, substr($s, $i, 1)) == 1) {
            $chs = $chs . substr($s, $i, 1);
        }
    }
    return $chs;
}

echo getAllNonRepeatedCharacter("ppdadxefe");



/*
run:

axf
 
*/

 

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