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<?php function substr_count_array( $haystack, $needle ) { $count = 0; foreach ($needle as $substring) { $count += substr_count( $haystack, $substring); } return $count; } $str = 'The fox jumped over the table and ate a frog'; $search = 'fox ate apple'; $words = explode(' ', $search); $result = substr_count_array($str, $words); $total_words = sizeof($words); if(($result / $total_words) * 100 > 50) { echo 'Related to your query (Total words: '.$total_words.', Words found: '.$result.')'; } else { echo 'Could not find anything related'; }
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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 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 - 8.2.17, 8.3.0 - 8.3.4
Related to your query (Total words: 3, Words found: 2)

preferences:
215.81 ms | 405 KiB | 306 Q