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<?php $exists = 'ok'; $array = ['var' => 'var1', 'bar' => 'bar1', 'exists' => 'foo']; foreach ($array as $key => $value) { if (isset(${$key})) { ${'data_' . $key} = $value; } else { ${$key} = $value; } } var_dump($var, $bar, $exists, $data_exists);
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, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.23, 8.4.1 - 8.4.10
string(4) "var1" string(4) "bar1" string(2) "ok" string(3) "foo"
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/fvemu on line 4
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/fvemu on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/fvemu on line 4
Process exited with code 255.
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49.23 ms | 409 KiB | 5 Q