Interdire une liste de mots

<?php  
    
    if(preg_match(get_the_title($post_id) , 'CREDIT','peugeot') == true) {  
        echo "m";  
    }  

?>

$string = get_the_title($post_id);
$mots = '/CREDIT|peugeot/';
if(preg_match($mots, $string, $matches)){
 echo " un ou plusieurs mots interdits";
}else{
echo "NO Problem";
}

<?php
//$string = get_the_title($post_id);
$string = " sdqfdsq
sd fdslkldsdsklfjsd dsf
sdqfsf  CREDIT";
$mots = '/CREDIT|peugeot/';
if(preg_match($mots, $string, $matches)){
 echo "YES <br>";
 print_r($matches);
}else{
echo "NO";
}

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