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<?php // Test Data $timeVariantSerialized = 'a:3:{s:7:"group_a";a:3:{i:0;a:3:{s:10:"id_variant";i:122;s:4:"name";s:13:"3 hour 30 min";s:4:"time";i:12600;}i:1;a:3:{s:10:"id_variant";i:173;s:4:"name";s:6:"3 hour";s:4:"time";i:10800;}i:2;a:3:{s:10:"id_variant";i:271;s:4:"name";s:6:"1 hour";s:4:"time";i:3600;}}s:7:"group_b";a:2:{i:0;a:3:{s:10:"id_variant";i:107;s:4:"name";s:13:"1 hour 30 min";s:4:"time";i:5400;}i:1;a:3:{s:10:"id_variant";i:321;s:4:"name";s:6:"3 hour";s:4:"time";i:10800;}}s:7:"group_c";a:4:{i:0;a:3:{s:10:"id_variant";i:28;s:4:"name";s:6:"1 hour";s:4:"time";i:3600;}i:1;a:3:{s:10:"id_variant";i:98;s:4:"name";s:6:"3 hour";s:4:"time";i:10800;}i:2;a:3:{s:10:"id_variant";i:157;s:4:"name";s:6:"2 hour";s:4:"time";i:7200;}i:3;a:3:{s:10:"id_variant";i:158;s:4:"name";s:13:"1 hour 30 min";s:4:"time";i:5400;}}}'; // Test Data Array $time_variant = unserialize( $timeVariantSerialized ); var_dump($time_variant); /* $groupsCount = count( $time_variant ); foreach( $time_variant as $groupId => $groupArray ) { foreach( $groupArray as $groupChildId => $groupChildArray ) { $timeCountsArray[$groupChildArray['time']][$groupId] = $groupChildId; } } $result = array(); foreach( $timeCountsArray as $time => $groupIdsArray ) { if( $groupsCount > count( $groupIdsArray ) ) continue; foreach( $groupIdsArray as $groupId => $groupChildId ) { $result[$time_variant[$groupId][$groupChildId]['id_variant']] = $time_variant[$groupId][$groupChildId]; // If you need only one result , uncomment the below break break; } // If more than 1 time could have variants , comment out below break to get them all break; } ksort( $result ); print_r( $result );*/

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