fix: register TypePHP functions with strict types

src/Translator.php

@@ -898,11 +898,11 @@ CODE;
             }
             $fullName = $functionDef->getNamespacedName();
             $zifName = $this->escapeZendFnName($fullName);
-            if ($functionDef->namespace) {
+            // TypePHP is always strict. Store the flag in the registered
-                $code .= $this->getIndent() . 'ZEND_NAMED_FE("' . $this->escapeString($fullName) . '", ZEND_FN(' . $zifName . '), arginfo_' . $zifName . ')' . PHP_EOL;
+            // zend_function instead of rewriting shared metadata on every call.
-            } else {
+            $code .= $this->getIndent() . 'ZEND_RAW_FENTRY("' . $this->escapeString($fullName)
-                $code .= $this->getIndent() . 'ZEND_FE(' . $zifName . ', arginfo_' . $zifName . ')' . PHP_EOL;
+                . '", ZEND_FN(' . $zifName . '), arginfo_' . $zifName
-            }
+                . ', ZEND_ACC_STRICT_TYPES, NULL, NULL)' . PHP_EOL;
         }
         $code .= $this->getIndent() . "ZEND_FE_END\n};\n// clang-format on" . PHP_EOL . PHP_EOL;
 
@@ -2569,8 +2569,6 @@ CODE;
             } elseif ($key === 'strict_types') {
                 if (!($declare->value instanceof Node\Scalar\Int_) or $declare->value->value !== 1) {
                     $this->fatalError($v, 'declare(strict_types=0) is not allowed, only strict_types=1 is supported');
-                } else {
-                    $this->setStrictTypes(1);
                 }
             } else {
                 $this->fatalError($v, 'declare(' . $key . '=' . $value . ') is not supported');
@@ -3249,17 +3247,6 @@ CODE;
             $cppCode .= $this->genWrapperRequiredArgCountCheck($functionDef, $displayName);
         }
 
-        /**
-         * Tthe current function must be marked with the `ZEND_ACC_STRICT_TYPES` flag.
-         * This flag is used to ensure that when the function calls other functions through the ZendVM,
-         * it strictly validates argument types according to the declared mode.
-         *
-         * It is important to note that this mechanism only applies to functions dynamically invoked by the ZendVM.
-         * If the target function is compiled native code, type checking will not be triggered—this is by design in the ZendVM,
-         * whose philosophy is to trust the C code implementation of compiled internal functions.
-         */
-        $cppCode .= $this->genStrictTypesCode();
-
         foreach ($functionDef->argInfoList as $k => $argInfo) {
             $var = 'arg_' . $argInfo->name;
             if ($argInfo->variadic) {
@@ -4996,8 +4983,4 @@ CODE;
         return $code;
     }
 
-    private function genStrictTypesCode(): string
-    {
-        return "execute_data->func->common.fn_flags |= ZEND_ACC_STRICT_TYPES;" . PHP_EOL;
-    }
 }

src/gen_stub.php

@@ -1688,7 +1688,9 @@ class FuncInfo {
 
     private function getArginfoFlagsByPhpVersions(): VersionFlags
     {
-        $flags = [];
+        // TypePHP is always strict. Register functions and methods with the
+        // flag once so dynamic calls made by native bodies inherit that mode.
+        $flags = ["ZEND_ACC_STRICT_TYPES"];
 
         if ($this->isMethod()) {
             if ($this->flags & Modifiers::PROTECTED) {

tests/compiler/declare/strict_types-default.phpt

@@ -0,0 +1,38 @@
+--TEST--
+TypePHP enables strict types without a declare directive
+--FILE--
+<?php
+function checkStrictCaller(string $label): void
+{
+    $callable = 'strlen';
+    try {
+        $callable(123);
+        echo $label, "=accepted\n";
+    } catch (TypeError $error) {
+        echo $label, "=TypeError\n";
+    }
+}
+
+class StrictMethodCaller
+{
+    public function check(): void
+    {
+        checkStrictCaller('method');
+    }
+}
+
+function main(): void
+{
+    checkStrictCaller('main');
+
+    $function = 'checkStrictCaller';
+    $function('function');
+
+    $method = [new StrictMethodCaller(), 'check'];
+    $method();
+}
+?>
+--EXPECT--
+main=TypeError
+function=TypeError
+method=TypeError

tests/compiler/declare/strict_types.phpt

@@ -4,14 +4,14 @@ declare: strict types 1
 <?php
 declare(strict_types=1);
 function main() {
-    parse_url(0);
+    $callable = 'strlen';
+    try {
+        $callable(123);
+        echo "accepted\n";
+    } catch (TypeError $error) {
+        echo "TypeError\n";
+    }
 }
 ?>
---EXPECTF--
+--EXPECT--
-Fatal error: Uncaught TypeError: parse_url(): Argument #1 ($url) must be of type string, int given in %s:%d
+TypeError
-Stack trace:
-#0 %s
-#1 %s
-#2 {main}
-  thrown in %s on line %d
-