Test create_function() reported as nonexistent on PHP 8

Author: ondrejmirtes

tests/PHPStan/Rules/Functions/CallToNonExistentFunctionRuleTest.php

@@ -97,4 +97,28 @@ public function testMatchExprAnalysis(): void
 		]);
 	}
 
+	public function testCreateFunctionPhp8(): void
+	{
+		if (PHP_VERSION_ID < 80000) {
+			$this->markTestSkipped('Test requires PHP 8.0.');
+		}
+
+		$this->analyse([__DIR__ . '/data/create_function.php'], [
+			[
+				'Function create_function not found.',
+				4,
+				'Learn more at https://phpstan.org/user-guide/discovering-symbols',
+			],
+		]);
+	}
+
+	public function testCreateFunctionPhp7(): void
+	{
+		if (PHP_VERSION_ID >= 80000) {
+			$this->markTestSkipped('Test requires PHP 7.x.');
+		}
+
+		$this->analyse([__DIR__ . '/data/create_function.php'], []);
+	}
+
 }

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

@@ -0,0 +1,5 @@
+<?php
+
+function (): void {
+	create_function('$a,$b', 'return "ln($a) + ln($b) = " . log($a * $b);');
+};