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<?php $s=null; if(is_numeric($s)==1) die("numerico"); echo "strlen=".strlen($s); for($i=0;$i<strlen($s);$i++) if(is_numeric($s[$i])) echo $s[$i]." in posizione $i"; ?>
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in /in/PRg6P on line 5 strlen=0 Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in /in/PRg6P on line 6

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