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run code in 300+ PHP versions simultaneously
<?php function test($var) { $GLOBALS['a']++; //$var++; debug_zval_dump($var); //$GLOBALS['var']++; echo $var; echo $GLOBALS['a']; // echo $GLOBALS['var']; } $a = 0; $GLOBALS['a']++; debug_zval_dump($a); test($a); echo $GLOBALS['a'];
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 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
int(1) int(1) 122
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
long(1) refcount(2) long(1) refcount(3) 122
preferences:
219.68 ms | 404 KiB | 359 Q