3v4l.org

run code in 300+ PHP versions simultaneously
<?php $myName = "Huny"; $myFullName = "Chung" . myName; echo $myFullName;
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
Fatal error: Uncaught Error: Undefined constant "myName" in /in/bW8Y5:5 Stack trace: #0 {main} thrown in /in/bW8Y5 on line 5
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant myName - assumed 'myName' (this will throw an Error in a future version of PHP) in /in/bW8Y5 on line 5 ChungmyName
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33
Notice: Use of undefined constant myName - assumed 'myName' in /in/bW8Y5 on line 5 ChungmyName

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164.17 ms | 401 KiB | 199 Q