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run code in 300+ PHP versions simultaneously
<?php $x = 0; function incX(){ $x += 1; return $x; } echo incX();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Warning: Undefined variable $x in /in/nZ9BV on line 6 1
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: x in /in/nZ9BV on line 6 1
Output for 7.3.32 - 7.3.33
1

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154.84 ms | 401 KiB | 184 Q