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<?php $a1=['0'=>'my key should be a (numeric) string']; $a2=[0=>'my key should be an int']; $a3= new stdClass; $a3->{"0"} = 'my key should be a (numeric) string'; $a3=(array)$a3; foreach($a1 as $key=>$val){echo $val.': ';var_dump($key);} foreach($a2 as $key=>$val){echo $val.': ';var_dump($key);} foreach($a3 as $key=>$val){echo $val.': ';var_dump($key);} var_dump($a1,$a2,$a3);
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
my key should be a (numeric) string: int(0) my key should be an int: int(0) my key should be a (numeric) string: int(0) array(1) { [0]=> string(35) "my key should be a (numeric) string" } array(1) { [0]=> string(23) "my key should be an int" } array(1) { [0]=> string(35) "my key should be a (numeric) string" }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
my key should be a (numeric) string: int(0) my key should be an int: int(0) my key should be a (numeric) string: string(1) "0" array(1) { [0]=> string(35) "my key should be a (numeric) string" } array(1) { [0]=> string(23) "my key should be an int" } array(1) { ["0"]=> string(35) "my key should be a (numeric) string" }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/vQCck 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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/vQCck on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/vQCck on line 3
Process exited with code 255.
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116.46 ms | 2784 KiB | 4 Q