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<?php var_dump(preg_replace("/sensitive/i", "INSENSITIVE", "This is case sensitive")); // URL encoded "/i" with NULL byte; $evilInput = urldecode("%2Fi%00"); $pattern = "/not " . $evilInput . "/"; var_dump(preg_replace($pattern, "TOTALLY ", "preg_replace is NOT injectable!"));
Output for git.master_jit, git.master, rfc.property-hooks
string(24) "This is case INSENSITIVE" Warning: preg_replace(): NUL is not a valid modifier in /in/Kp2FC on line 8 NULL

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