3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo1($a=null, $b) { printf("foo1: %s, %s", var_export($a, true), var_export($b, true)); } //function foo2($a, $b=null, $c) { // var_dump($a); // var_dump($b); // var_dump($c); //} foo1(1, 2); foo1(3); //foo2(4); //foo2(4, 5); //foo2(4, 5, 6);
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Optional parameter $a declared before required parameter $b is implicitly treated as a required parameter in /in/3M0nL on line 3 foo1: 1, 2 Fatal error: Uncaught ArgumentCountError: Too few arguments to function foo1(), 1 passed in /in/3M0nL on line 14 and exactly 2 expected in /in/3M0nL:3 Stack trace: #0 /in/3M0nL(14): foo1(3) #1 {main} thrown in /in/3M0nL on line 3
Process exited with code 255.

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