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<?php $search = "/[^<>agt](.*)[^g<a\/t>]/"; $replace = "your new inner text"; $string = "thanks <tag>i dont know what is here</tag>"; echo preg_replace($search,$replace,$string);
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.26, 8.1.0 - 8.1.13
tyour new inner text</tag>

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