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<?php preg_match_all("/(?<=__).*?(?=__)/", 'Bize __ bu** __ lazımdır. __yok+-sa__ bu mu', $matches); print_r($matches);
Output for 4.4.0 - 4.4.9, 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 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 ( [0] => Array ( [0] => bu** [1] => lazımdır. [2] => yok+-sa ) )
Output for 4.3.0 - 4.3.11, 5.0.0 - 5.0.4
Array ( [0] => Array ( ) )

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