3v4l.org

run code in 300+ PHP versions simultaneously
<?php $tempoutput = "abc\r\nxyz"; var_dump( $tempoutput, str_replace("\r\n","\\x0d\\x0a",$tempoutput) );
Output for 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.30, 8.0.0 - 8.0.22, 8.1.0 - 8.1.9
string(8) "abc xyz" string(14) "abc\x0d\x0axyz"

preferences:
88.2 ms | 899 KiB | 14 Q