3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "http://external.ak.fbcdn.net/safe_image.php?d=AQD-PsVh6CG6Q2RK&w=154&h=154&url=https\u00253A\u00252F\u00252Ffbcdn-sphotos-b-a.akamaihd.net\u00252Fhphotos-ak-prn1\u00252Ft1\u00252F1623737_673137756072004_537520808_n.jpg"; $arr = explode($str, "url="); echo $arr[1];
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined array key 1 in /in/M1psf on line 6
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined offset: 1 in /in/M1psf on line 6
Output for 7.3.32 - 7.3.33
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Notice: Undefined offset: 1 in /in/M1psf on line 6
preferences:
259.29 ms | 402 KiB | 424 Q