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<?php $arrayIterator = new ArrayIterator(array('test 1' => ['derp'], 'another test', 'test 123')); $regexIterator = new RegexIterator($arrayIterator, '/^test/', RegexIterator::REPLACE, RegexIterator::USE_KEY); $regexIterator->replacement = ''; foreach ($regexIterator as $value) { var_dump($value); echo "\n"; }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.18, 5.6.0 - 5.6.2, 5.6.27 - 5.6.38, 7.0.12 - 7.0.31, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(1) { [0]=> string(4) "derp" }
Output for 5.5.19 - 5.5.38, 5.6.3 - 5.6.26, 7.0.0 - 7.0.11
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/TbNf3 on line 2
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/TbNf3 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/TbNf3 on line 2
Process exited with code 255.

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