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@ 2018-04-23T09:12:01Z

<?php
    $badthings = [ "`", "<", ">", "()"];
    $input="Ciao< come va?'";
    
    foreach ($badthings as $key => $badthing) {
        if((int)strpos($input, $badthing) > -1){
            str_replace($badthing, "", $input);
        }
    }
    
    echo $input;
?>

Output
Performance
VLD
References
Branches

strpos: documentation ( source)
str_replace: documentation ( source)

preferences:dark modelive preview

57.88 ms | 402 KiB | 5 Q