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run code in 300+ PHP versions simultaneously
<?php function printGlobal(){ global ${$a}; global $b; echo '<br/>-'.${$a}; echo '<br/>-'.$b; echo '<br/>-'.$GLOBALS['c']; } $a = "hello"; $b = 7; $c = 6; printGlobal();
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $a in /in/Zj5LF on line 4 Warning: Undefined variable $a in /in/Zj5LF on line 4 Warning: Undefined variable $a in /in/Zj5LF on line 6 <br/>-<br/>-7<br/>-6

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