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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 / $total_words) * 100 > 50) { echo 'Related to your query (Total words: '.$words.', Words found: '.$result.')'; } else { echo 'Could not find anything related'; }
Output for 5.4.0 - 7.2.0
Notice: Array to string conversion in /in/c2ZLS on line 23 Related to your query (Total words: Array, Words found: 2)
Output for 4.3.0 - 5.3.29
Related to your query (Total words: Array, Words found: 2)