Add array_udiff to arrayFunctions.stub

stubs/arrayFunctions.stub

@@ -48,3 +48,16 @@ function uksort(
     array &$one,
     callable $two
 ): bool {}
+
+/**
+ * @template T of mixed
+ *
+ * @param array<T> $one
+ * @param array<T> $two
+ * @param callable(T, T): int<-1, 1> $three
+ */
+function array_udiff(
+    array $one,
+    array $two,
+    callable $three
+): int {}

tests/PHPStan/Rules/Functions/CallToFunctionParametersRuleTest.php

@@ -618,6 +618,32 @@ public function testArrayWalkArrowFunctionCallback(): void
 		]);
 	}
 
+	public function testArrayUdiffCallback(): void
+	{
+		$this->analyse([__DIR__ . '/data/array_udiff.php'], [
+			[
+				'Parameter #3 $data_comp_func of function array_udiff expects callable(int, int): int<-1, 1>, Closure(string, string): string given.',
+				6,
+			],
+			[
+				'Parameter #3 $data_comp_func of function array_udiff expects callable(int, int): int<-1, 1>, Closure(int, int): non-empty-string given.',
+				14,
+			],
+			[
+				'Parameter #1 $arr1 of function array_udiff expects array<string>, null given.',
+				20,
+			],
+			[
+				'Parameter #2 $arr2 of function array_udiff expects array<string>, null given.',
+				21,
+			],
+			[
+				'Parameter #3 $data_comp_func of function array_udiff expects callable(string, string): int<-1, 1>, Closure(string, int): non-empty-string given.',
+				22,
+			],
+		]);
+	}
+
 	public function testPregReplaceCallback(): void
 	{
 		$this->analyse([__DIR__ . '/data/preg_replace_callback.php'], [

tests/PHPStan/Rules/Functions/data/array_udiff.php

@@ -0,0 +1,34 @@
+<?php declare(strict_types = 1);
+
+array_udiff(
+	[1,2,3],
+	[4,5,6],
+	function(string $a, string $b): string {
+		return $a . $b;
+	},
+);
+
+array_udiff(
+	[1,2,3],
+	[4,5,6],
+	function(int $a, int $b): string {
+		return $a . $b;
+	},
+);
+
+array_udiff(
+	null,
+	null,
+	function(string $a, int $b): string {
+		return $a . $b;
+	},
+);
+
+array_udiff(
+	[25,26],
+	[26,27],
+	static function(int $a, int $b): int {
+		return $a <=> $b;
+	},
+);
+