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<?php $opt_dupa = 'a'; $o['dupa'] = 'b'; extract((array) $o, EXTR_PREFIX_ALL | EXTR_IF_EXISTS, 'opt'); var_dump($opt_dupa);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught ValueError: extract(): Argument #2 ($flags) must be a valid extract type in /in/qhSY0:4 Stack trace: #0 /in/qhSY0(4): extract(Array, 7, 'opt') #1 {main} thrown in /in/qhSY0 on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 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
Warning: extract(): Invalid extract type in /in/qhSY0 on line 4 string(1) "a"
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: extract(): Unknown extract type in /in/qhSY0 on line 4 string(1) "a"
Output for 4.3.0 - 4.3.1
Warning: extract() [http://www.php.net/function.extract]: Unknown extract type in /in/qhSY0 on line 4 string(1) "a"

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