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<?php function escape_input($input) { return str_replace("'", "''", $input); } //$a = "\' OR 1 = 1 --"; $a=CONCAT(CHAR(39),CHAR(32),CHAR(111),CHAR(114),CHAR(32),CHAR(39),CHAR(49),CHAR(39),CHAR(61),CHAR(39),CHAR(49)); echo escape_input($a); echo "\n"; $b = chr(0x27)."admin'--"; //echo escape_input($b); echo addslashes($b); echo "\n"; ?>
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Call to undefined function CONCAT() in /in/1mT0l:6 Stack trace: #0 {main} thrown in /in/1mT0l on line 6
Process exited with code 255.
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Fatal error: Call to undefined function CONCAT() in /in/1mT0l on line 6
Process exited with code 255.

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