3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "blur/blur/myPhotoName_20170818_111453.jpg"; $pos = strrpos($str, "/")+1; $str = substr($str, $pos, strpos($str, "_")-$pos) . substr($str, strpos($str, ".")); Echo $str;
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
myPhotoName.jpg

preferences:
140.26 ms | 408 KiB | 5 Q