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<?php $data = ['foo'=>'1', 'bar'=>'2', 'baz'=>'3']; while(list($key, $value) = each($data)) { echo(sprintf('Current key is [%s] and value [%s]'.PHP_EOL, $key, $value)); if($value==='1') { end($data); $result = key($data); } } var_dump($result);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Call to undefined function each() in /in/Pl9W7:4 Stack trace: #0 {main} thrown in /in/Pl9W7 on line 4
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/Pl9W7 on line 4 Current key is [foo] and value [1] Current key is [baz] and value [3] string(3) "baz"
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, 7.3.32 - 7.3.33, 7.4.26
Current key is [foo] and value [1] Current key is [baz] and value [3] string(3) "baz"
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/Pl9W7 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/Pl9W7 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Pl9W7 on line 3
Process exited with code 255.
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348.17 ms | 401 KiB | 460 Q