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<?php $string = "https://www.facebook.com/OutfitFashionUK/photos/a.257299044407630.1073741836.245894895548045/715611908576339/?type=3&theater"; print explode($string, "/")[-1];
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined array key -1 in /in/mvpZj on line 5
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 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/mvpZj on line 5
Output for 7.3.32 - 7.3.33

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164.57 ms | 401 KiB | 194 Q