php - Why is strcasecmp not working? -

php - Why is strcasecmp not working? -

i doing string comparing in php, strcasecmp outputs strings not equal.

here code:

<?php function multiexplode($delimiters,$string) { $ready = str_replace($delimiters, $delimiters[0], $string); $launch = explode($delimiters[0], $ready); homecoming $launch; } $owner = "musica no taatro: venha ja"; $owner_keys = multiexplode(array(".",":"," "),$owner); $musica_c = array("musica","teatro"); $musica = 0; if(sizeof($owner_keys) > 1){ foreach($musica_c $key_c){ foreach($owner_keys $cat){ if(strcasecmp($cat,$key_c)==0){ ++$musica; }else{ echo "do not match<br>"; } } } } ?>

why strcasecmp observe different strings?

strcasecmp doing work properly.

it matching 1 pair of string musica & musica. echo $musica; in end. however, string pair different taatro & teatro. why not matching.

it expected behavior.

php strcmp