3v4l.org

run code in 300+ PHP versions simultaneously
<?php function customStyleSheet () { echo '<link href="' . customDir($whatEnv, 'common') . 'styles.css" type="text/css" rel="stylesheet">'; } customStyleSheet();
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Call to undefined function customDir() in /in/M5Qhk:4 Stack trace: #0 /in/M5Qhk(7): customStyleSheet() #1 {main} thrown in /in/M5Qhk on line 4
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Call to undefined function customDir() in /in/M5Qhk on line 4
Process exited with code 255.

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