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<?php function bold($word, $sentence){ $result = preg_replace('~\b(' . preg_quote($word, '~') . ')\b~i', '<span class="found">$1</span>', $sentence); return $result; } $query = 'google'; $description = 'google this and that okay'; $thing = bold($query, $description); echo $thing;
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, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 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
<span class="found">google</span> this and that okay

preferences:
237.16 ms | 405 KiB | 324 Q