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run code in 300+ PHP versions simultaneously
<?php $content = 'Some text that contains src <iframe src="www.example.com"/> Some text'; echo preg_replace('~<iframe[^>]*\K (?=src=)~i', ' data-', $content);
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Some text that contains src <iframe data-src="www.example.com"/> Some text
preferences:
117.85 ms | 407 KiB | 5 Q