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<?php $a = 'Ukraine - Russia or Iran - Argentina'; preg_match('/(.+-{1}.+)(or)(.+-{1}.+)/', $a, $m, PREG_OFFSET_CAPTURE); var_dump($m);
Output for 4.3.0 - 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, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 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(4) { [0]=> array(2) { [0]=> string(36) "Ukraine - Russia or Iran - Argentina" [1]=> int(0) } [1]=> array(2) { [0]=> string(17) "Ukraine - Russia " [1]=> int(0) } [2]=> array(2) { [0]=> string(2) "or" [1]=> int(17) } [3]=> array(2) { [0]=> string(17) " Iran - Argentina" [1]=> int(19) } }

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