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<?php var_dump(array_filter([1,2,3], function(&$v) {$v = 17;return true;}));
Output for git.master, git.master_jit, rfc.property-hooks
Warning: {closure}(): Argument #1 ($v) must be passed by reference, value given in /in/T0fvi on line 3 Warning: {closure}(): Argument #1 ($v) must be passed by reference, value given in /in/T0fvi on line 3 Warning: {closure}(): Argument #1 ($v) must be passed by reference, value given in /in/T0fvi on line 3 array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) }

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