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<?php $keyword = "o negative blood donor in khulna"; $pattern = "/(?i)\b[abo]\s+(?:posi|nega)tive\b|\S+/"; preg_match_all($pattern, $keyword, $keyword_array); print_r($keyword_array[0]);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.7
Array ( [0] => o negative [1] => blood [2] => donor [3] => in [4] => khulna )
preferences:
92.81 ms | 1266 KiB | 4 Q