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<?php $a = '[audio mp3="https://abcd.com/wp-content/uploads/sites/2/2020/03/classical-demo.mp3"][/audio]'; $b = str_replace("[","<",$a); $b = str_replace("]",">",$b); $b = str_replace("audio","a",$b); // you need to replace mp3=, not mp3, as you have 2 of it $b = str_replace("mp3=","href=",$b); // optional $b = str_replace("><",">link text<",$b); echo $b;
Output for git.master, git.master_jit, rfc.property-hooks
<a href="https://abcd.com/wp-content/uploads/sites/2/2020/03/classical-demo.mp3">link text</a>

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