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<?php $initialString = "Hello, PHP"; $myFunc = function($myFunc, $n = 3, &$initialString){ if($n >= 0){ $initialString .= ", " . $initialString; $temp = $myFunc($myFunc, $n - 1, $initialString); return $temp; } return $initialString; }; echo $myFunc($myFunc, 3, $initialString);
Output for rfc.property-hooks, git.master, git.master_jit
Deprecated: Optional parameter $n declared before required parameter $initialString is implicitly treated as a required parameter in /in/Aa2Rd on line 4 Hello, PHP, Hello, PHP, Hello, PHP, Hello, PHP, Hello, PHP, Hello, PHP, Hello, PHP, Hello, PHP, Hello, PHP, Hello, PHP, Hello, PHP, Hello, PHP, Hello, PHP, Hello, PHP, Hello, PHP, Hello, PHP

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