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<?php function keys_with_reference(array $array) { $clone = $array; $testObject = new \stdClass; $keys_with_reference = array(); foreach ($array as $k => $v) { $clone[$k] = $testObject; if ($array[$k] === $testObject) { $array[$k] = $v; $keys_with_reference[$k] = TRUE; } } return $keys_with_reference; } $x = array( 'left' => array(), 'right' => array(), ); print_r(keys_with_reference($x)); &$x['left']; print_r(keys_with_reference($x)); $left = &$x['left']; print_r(keys_with_reference($x));
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.42, 5.5.24 - 5.5.26, 5.6.8 - 5.6.10
Parse error: syntax error, unexpected '&' in /in/vmnRe on line 24
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/vmnRe on line 5 Parse error: syntax error, unexpected '&' in /in/vmnRe on line 24
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/vmnRe on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/vmnRe on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_ARRAY, expecting ')' in /in/vmnRe on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/vmnRe on line 3
Process exited with code 255.
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