Printer: prints trailing comma in parameter lists when PHP 8 syntax is used

Author: dg

src/PhpGenerator/Printer.php

@@ -280,7 +280,7 @@ public function printParameters($function, PhpNamespace $namespace = null): stri
 		$line = implode(', ', $params);
 
 		return count($params) > 1 && ($special || strlen($line) > (new Dumper)->wrapLength)
-			? "(\n" . $this->indent(implode(",\n", $params)) . "\n)"
+			? "(\n" . $this->indent(implode(",\n", $params)) . ($special ? ',' : '') . "\n)"
 			: "($line)";
 	}
 

tests/PhpGenerator/expected/ClassType.from.80.expect

@@ -3,7 +3,7 @@ class Class8
 	public function __construct(
 		public $a,
 		public int $b = 10,
-		$c = null
+		$c = null,
 	) {
 	}
 }

tests/PhpGenerator/expected/ClassType.promotion.expect

@@ -4,7 +4,7 @@ class Example
 		$a,
 		public $b,
 		/** promo */
-		#[Example] private string $c
+		#[Example] private string $c,
 	) {
 	}
 }

tests/PhpGenerator/expected/PhpNamespace.expect

@@ -13,7 +13,7 @@ class A implements A, C
 		self $b,
 		parent $c,
 		array $d,
-		callable $e
+		callable $e,
 	) {
 	}
 }