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<?php $string = 'ZOOBLES ieterpjami(902486) CDX-GT560UI Blue ( CDXGT560UI.EUR )'; preg_match_all( '#\(\s*([\.\dA-Z]+)\s*\)#', $string, $matches ); var_dump( $matches );
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 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(2) { [0]=> array(2) { [0]=> string(8) "(902486)" [1]=> string(18) "( CDXGT560UI.EUR )" } [1]=> array(2) { [0]=> string(6) "902486" [1]=> string(14) "CDXGT560UI.EUR" } }

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