3v4l.org

run code in 300+ PHP versions simultaneously
<?php phpversion() >= "7.0.0" or die(); $foo = 'foo'; $bar = new stdClass; $bar->$foo = array(10, 20, 30); // $bar->foo => array(10, 20, 30) $bar->{$foo[0]} = 42; // dynamic prop $f = 42 fr 0 offset of ‘foo’ $bar->$foo[0] = 42; // zeroth element of array $foo set to 42 print_r($bar);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.25, 7.3.0 - 7.3.12, 7.4.0
stdClass Object ( [foo] => Array ( [0] => 42 [1] => 20 [2] => 30 ) [f] => 42 )
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
preferences:
83.66 ms | 402 KiB | 79 Q