3v4l.org

run code in 300+ PHP versions simultaneously
<?php $sqlhost = 'sqlhost'; $sqluser = 'sqluser'; $sqlpass = 'sqlpass'; $sqldb = 'sqldb'; $var = "<?php\n\n'$sqlhost' = \"$sqlhost\";\n$$sqluser = \"$sqluser\";\n$$sqlpass = \"$sqlpass\";\n$$sqldb = \"$sqldb\";\n\n?>"; echo $var;
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<?php 'sqlhost' = "sqlhost"; $sqluser = "sqluser"; $sqlpass = "sqlpass"; $sqldb = "sqldb"; ?>
preferences:
241.11 ms | 405 KiB | 399 Q