3v4l.org

run code in 500+ PHP versions simultaneously
<?php $string="localhost/uploads/images/photo.jpg"; $string2="localhost/uploads/images/photo_thumb.jpg"; $replacement="$1/$2_thumb.$3"; $pattern= '/([\w+\/]*)(?=\/)\/([\w]+(?<!_thumb))\.(\w+)/i'; echo preg_replace($pattern, $replacement, $string); echo "\n\r"; echo preg_replace($pattern, $replacement, $string2);
Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
localhost/uploads/images/photo_thumb.jpg localhost/uploads/images/photo_thumb.jpg
preferences:
110.08 ms | 1450 KiB | 4 Q