3v4l.org

run code in 300+ PHP versions simultaneously
<?php output_add_rewrite_var('PHPSESSID', '7siuuuk98ns2lps0v1v251f1k3'); ini_set('url_rewriter.tags', 'a=href'); echo json_encode('<a href="/test">test</a>');
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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
"<a href=\?PHPSESSID=7siuuuk98ns2lps0v1v251f1k3"\/test\">test<\/a>"
preferences:
149.99 ms | 407 KiB | 5 Q