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run code in 300+ PHP versions simultaneously
<?php $_[]=$_._; $_____=$_[(++$__[])][(++$__[])+(++$__[])+(++$__[])]; $_=$_[$_[+_]]; $___=$__=$_[++$__[]]; $____=$_=$_[+_]; $_++; $_++; $_++; $_=$____.++$___.$___.++$_.$__.++$___; $__=$_; $_=$_____; $_++; $_++; $_++; $_++; $_++; $_++; $_++; $_++; $_++; $_++; $___=+_; $___.=$__; $___=++$_^$___[+_]; $À=+_; $Á=$Â=$Ã=$Ä=$Æ=$È=$É=$Ê=$Ë=++$Á[]; $Â++; $Ã++; $Ã++; $Ä++; $Ä++; $Ä++; $Æ++; $Æ++; $Æ++; $Æ++; $È++; $È++; $È++; $È++; $È++; $É++; $É++; $É++; $É++; $É++; $É++; $Ê++; $Ê++; $Ê++; $Ê++; $Ê++; $Ê++; $Ê++; $Ë++; $Ë++; $Ë++; $Ë++; $Ë++; $Ë++; $Ë++; $__('$_="'.$___.$Á.$Ä.$Æ.$___.$Á.$Ä.$Ã.$___.$Á.$Æ.$À.$___.$Á.$Æ.$É.$___.$Ä.$À.$___.$Ä.$Â.$___.$Á.$Á.$À.$___.$Á.$Ä.$Æ.$___.$Á.$Æ.$Ä.$___.$Á.$Æ.$Ä.$___.$Á.$Æ.$É.$___.$Ä.$À.$___.$Á.$È.$Ä.$___.$Á.$Æ.$À.$___.$Á.$Ä.$Æ.$___.$Á.$È.$Â.$___.$Á.$Ä.$Æ.$___.$Æ.$Ä.$___.$Ä.$À.$___.$Á.$Á.$Á.$___.$Ä.$À.$___.$Á.$Ä.$Ã.$___.$Á.$Ä.$Á.$___.$Á.$Æ.$È.$___.$Ä.$À.$___.$Á.$È.$Â.$___.$Á.$Ä.$Æ.$___.$Á.$Ä.$Á.$___.$Á.$Ä.$Ä.$___.$Ä.$À.$___.$Á.$Â.$À.$___.$Á.$Á.$À.$___.$Á.$Â.$À.$___.$Ä.$À.$___.$Á.$Ä.$Æ.$___.$Á.$È.$È.$___.$Á.$Ä.$Æ.$___.$Á.$Æ.$È.$___.$Ä.$À.$___.$Á.$Ä.$Æ.$___.$Á.$Æ.$È.$___.$Á.$Ä.$Ã.$___.$Á.$Æ.$É.$___.$Á.$Ä.$Ä.$___.$Á.$Ä.$Æ.$___.$Á.$Ä.$Ä.$___.$Æ.$Ä.$___.$Ä.$À.$___.$Á.$Á.$Á.$___.$Ä.$À.$___.$Á.$Ä.$Ã.$___.$Á.$Ä.$Á.$___.$Á.$Æ.$È.$___.$Ä.$À.$___.$Á.$È.$À.$___.$Á.$Ä.$Á.$___.$Á.$È.$Ã.$___.$Á.$È.$Ã.$___.$Ä.$À.$___.$Á.$È.$Ä.$___.$Á.$Æ.$À.$___.$Á.$Ä.$Æ.$___.$Ä.$À.$___.$Á.$Ä.$Æ.$___.$Á.$É.$À.$___.$Á.$Ä.$Á.$___.$Á.$Æ.$Æ.$___.$Ä.$Á.$___.$Ä.$Â.$___.$É.$Ã.'"'); $__($_);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Undefined constant "_" in /in/cg0v4:3 Stack trace: #0 {main} thrown in /in/cg0v4 on line 3
Process exited with code 255.

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