3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo 'ahoj ' . $foo; echo "ahoj $foo";
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $foo in /in/ndvW2 on line 3 ahoj Warning: Undefined variable $foo in /in/ndvW2 on line 4 ahoj

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