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<?php $text = 'some text [BUTTON link="www.test.com" label="Click here"] some text'; echo preg_replace( '/\[button link="([^"]+)" label="([^"]+)"]/i', '<a href="$1">$2</a>', $text );
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.7
some text <a href="www.test.com">Click here</a> some text

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86.41 ms | 1260 KiB | 4 Q