3v4l.org

run code in 300+ PHP versions simultaneously
<?php if ($format === 'js') { echo 'js'; } if ('js' === $format) { echo 'js'; }
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 variable $format in /in/VdTda on line 4 Warning: Undefined variable $format in /in/VdTda on line 8
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 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 - 7.0.32, 7.1.0 - 7.1.24, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined variable: format in /in/VdTda on line 4 Notice: Undefined variable: format in /in/VdTda on line 8
Output for 7.3.32 - 7.3.33, 7.4.26
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: format in /in/VdTda on line 4 Notice: Undefined variable: format in /in/VdTda on line 8
preferences:
276.08 ms | 402 KiB | 420 Q