3v4l.org

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<?php $a = 1;function printA() {global $a;print $a;}printA(); function printAFailed() {print $a;} printAFailed();
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
1 Warning: Undefined variable $a in /in/L2M9K on line 3
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 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
1 Notice: Undefined variable: a in /in/L2M9K on line 3
Output for 7.3.32 - 7.3.33
1
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
1 Notice: Undefined variable: a in /in/L2M9K on line 3
preferences:
209.11 ms | 402 KiB | 353 Q