wudi · pull · Aug 12, 2025 · Aug 12, 2025 · Aug 12, 2025 · Aug 12, 2025
diff --git a/NEWS b/NEWS
@@ -9,6 +9,13 @@ PHP                                                                        NEWS
     been deprecated, as it no longer has any effect since PHP 8.0. (Girgias)
   . Terminating case statements with a semicolon instead of a colon has
     been deprecated. (theodorejb)
+  . The backtick operator as an alias for shell_exec() has been deprecated.
+    (timwolla)
+  . Returning null from __debugInfo() has been deprecated. (DanielEScherzer)
+
+- Date:
+  . The DATE_RFC7231 and DateTimeInterface::RFC7231 constants have been
+    deprecated. (jorgsowa)
 
 - DOM:
   . Fixed bug GH-18877 (\Dom\HTMLDocument querySelectorAll selecting only the

diff --git a/UPGRADING b/UPGRADING
@@ -328,6 +328,17 @@ PHP 8.5 UPGRADE NOTES
   . Terminating case statements with a semicolon instead of a colon has
     been deprecated.
     RFC: https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_semicolon_after_case_in_switch_statement
+  . The backtick operator as an alias for shell_exec() has been deprecated.
+    RFC: https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_backticks_as_an_alias_for_shell_exec
+  . Returning null from __debugInfo() has been deprecated.
+    Return an empty array instead.
+    RFC: https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_debuginfo_returning_null
+
+- Date:
+  . The DATE_RFC7231 and DateTimeInterface::RFC7231 constants have been
+    deprecated. This is because the associated timezone is ignored and always
+    uses GMT.
+    RFC: https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_date_rfc7231_and_datetimeinterfacerfc7231
 
 - FileInfo:
   . The finfo_close() function has been deprecated.

diff --git a/Zend/Optimizer/block_pass.c b/Zend/Optimizer/block_pass.c
@@ -420,6 +420,14 @@ static void zend_optimize_block(zend_basic_block *block, zend_op_array *op_array
 				}
 				break;
 
+			case ZEND_EXT_STMT:
+				if (opline->op1_type & (IS_TMP_VAR|IS_VAR)) {
+					/* Variable will be deleted later by FREE, so we can't optimize it */
+					Tsource[VAR_NUM(opline->op1.var)] = NULL;
+					break;
+				}
+				break;
+
 			case ZEND_CASE:
 			case ZEND_CASE_STRICT:
 			case ZEND_COPY_TMP:

diff --git a/Zend/tests/bug40236.phpt b/Zend/tests/bug40236.phpt
@@ -8,7 +8,7 @@ if (extension_loaded("readline")) die("skip Test doesn't support readline");
 <?php
 $php = getenv('TEST_PHP_EXECUTABLE_ESCAPED');
 $cmd = "$php -n -d memory_limit=4M -a \"".__DIR__."\"/bug40236.inc";
-echo `$cmd`;
+echo shell_exec($cmd);
 ?>
 --EXPECT--
 Interactive shell (-a) requires the readline extension.
diff --git a/Zend/tests/bug55509.phpt b/Zend/tests/bug55509.phpt
@@ -28,7 +28,7 @@ if (PHP_OS == 'Linux') {
   }
 }
 elseif (PHP_OS == 'FreeBSD') {
-  $lines = explode("\n",`sysctl -a`);
+  $lines = explode("\n", shell_exec("sysctl -a"));
   $infos = array();
   foreach ($lines as $line) {
     if (!$line){

diff --git a/Zend/tests/bug64677.phpt b/Zend/tests/bug64677.phpt
@@ -17,5 +17,12 @@ function show_outputa($prepend, $output) {
 show_outputa('Files: ', `cd .`); // this works as expected
 
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: The backtick (`) operator is deprecated, use shell_exec() instead in %s on line %d
+
+Deprecated: The backtick (`) operator is deprecated, use shell_exec() instead in %s on line %d
+
+Deprecated: The backtick (`) operator is deprecated, use shell_exec() instead in %s on line %d
+
+Deprecated: The backtick (`) operator is deprecated, use shell_exec() instead in %s on line %d
 Okey
diff --git a/Zend/tests/debug_info/debug_info.phpt b/Zend/tests/debug_info/debug_info.phpt
@@ -36,5 +36,7 @@ object(Foo)#%d (3) {
   ["c":"Foo":private]=>
   int(3)
 }
+
+Deprecated: Returning null from Bar::__debugInfo() is deprecated, return an empty array instead in %s on line %d
 object(Bar)#%d (0) {
 }
diff --git a/Zend/tests/debug_info/recursion_return_null.phpt b/Zend/tests/debug_info/recursion_return_null.phpt
@@ -0,0 +1,31 @@
+--TEST--
+Testing __debugInfo() magic method
+--FILE--
+<?php
+
+set_error_handler(
+    static function () {
+        echo "in handler\n";
+        $f = new Foo();
+        var_dump($f);
+    }
+);
+
+class Foo {
+  public function __debugInfo() {
+    return null;
+  }
+}
+
+$f = new Foo;
+var_dump($f);
+
+?>
+--EXPECTF--
+in handler
+
+Deprecated: Returning null from Foo::__debugInfo() is deprecated, return an empty array instead in %s on line %d
+object(Foo)#3 (0) {
+}
+object(Foo)#2 (0) {
+}
diff --git a/Zend/zend_API.c b/Zend/zend_API.c
@@ -3770,7 +3770,7 @@ static zend_always_inline zend_class_entry *get_scope(zend_execute_data *frame)
 
 static bool zend_is_callable_check_class(zend_string *name, zend_class_entry *scope, zend_execute_data *frame, zend_fcall_info_cache *fcc, bool *strict_class, char **error, bool suppress_deprecation) /* {{{ */
 {
-	bool ret = 0;
+	bool ret = false;
 	zend_class_entry *ce;
 	size_t name_len = ZSTR_LEN(name);
 	zend_string *lcname;
@@ -3795,7 +3795,7 @@ static bool zend_is_callable_check_class(zend_string *name, zend_class_entry *sc
 			if (!fcc->object) {
 				fcc->object = zend_get_this_object(frame);
 			}
-			ret = 1;
+			ret = true;
 		}
 	} else if (zend_string_equals(lcname, ZSTR_KNOWN(ZEND_STR_PARENT))) {
 		if (!scope) {
@@ -3815,7 +3815,7 @@ static bool zend_is_callable_check_class(zend_string *name, zend_class_entry *sc
 				fcc->object = zend_get_this_object(frame);
 			}
 			*strict_class = 1;
-			ret = 1;
+			ret = true;
 		}
 	} else if (zend_string_equals(lcname, ZSTR_KNOWN(ZEND_STR_STATIC))) {
 		zend_class_entry *called_scope = zend_get_called_scope(frame);
@@ -3832,7 +3832,7 @@ static bool zend_is_callable_check_class(zend_string *name, zend_class_entry *sc
 				fcc->object = zend_get_this_object(frame);
 			}
 			*strict_class = 1;
-			ret = 1;
+			ret = true;
 		}
 	} else if ((ce = zend_lookup_class(name)) != NULL) {
 		zend_class_entry *scope = get_scope(frame);
@@ -3852,7 +3852,7 @@ static bool zend_is_callable_check_class(zend_string *name, zend_class_entry *sc
 			fcc->called_scope = fcc->object ? fcc->object->ce : ce;
 		}
 		*strict_class = 1;
-		ret = 1;
+		ret = true;
 	} else {
 		if (error) zend_spprintf(error, 0, "class \"%.*s\" not found", (int)name_len, ZSTR_VAL(name));
 	}

diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c
@@ -821,7 +821,8 @@ static void zend_do_free(znode *op1) /* {{{ */
 		} else {
 			while (opline >= CG(active_op_array)->opcodes) {
 				if ((opline->opcode == ZEND_FETCH_LIST_R ||
-				     opline->opcode == ZEND_FETCH_LIST_W) &&
+				     opline->opcode == ZEND_FETCH_LIST_W ||
+				     opline->opcode == ZEND_EXT_STMT) &&
 				    opline->op1_type == IS_VAR &&
 				    opline->op1.var == op1->u.op.var) {
 					zend_emit_op(NULL, ZEND_FREE, op1, NULL);
@@ -1920,7 +1921,7 @@ static void zend_add_to_list(void *result, void *item) /* {{{ */
 }
 /* }}} */
 
-static void zend_do_extended_stmt(void) /* {{{ */
+static void zend_do_extended_stmt(znode* result) /* {{{ */
 {
 	zend_op *opline;
 
@@ -1931,6 +1932,9 @@ static void zend_do_extended_stmt(void) /* {{{ */
 	opline = get_next_op();
 
 	opline->opcode = ZEND_EXT_STMT;
+	if (result) {
+		SET_NODE(opline->op1, result);
+	}
 }
 /* }}} */
 
@@ -6050,7 +6054,7 @@ static void zend_compile_for(zend_ast *ast) /* {{{ */
 
 	zend_update_jump_target_to_next(opnum_jmp);
 	zend_compile_for_expr_list(&result, cond_ast);
-	zend_do_extended_stmt();
+	zend_do_extended_stmt(NULL);
 
 	zend_emit_cond_jump(ZEND_JMPNZ, &result, opnum_start);
 
@@ -6171,7 +6175,7 @@ static void zend_compile_if(zend_ast *ast) /* {{{ */
 
 			if (i > 0) {
 				CG(zend_lineno) = cond_ast->lineno;
-				zend_do_extended_stmt();
+				zend_do_extended_stmt(NULL);
 			}
 
 			zend_compile_expr(&cond_node, cond_ast);
@@ -6505,6 +6509,8 @@ static void zend_compile_pipe(znode *result, zend_ast *ast)
 	}
 
 	zend_compile_expr(result, fcall_ast);
+	CG(zend_lineno) = fcall_ast->lineno;
+	zend_do_extended_stmt(result);
 }
 
 static void zend_compile_match(znode *result, zend_ast *ast)
@@ -8537,7 +8543,7 @@ static zend_op_array *zend_compile_func_decl_ex(
 	/* put the implicit return on the really last line */
 	CG(zend_lineno) = decl->end_lineno;
 
-	zend_do_extended_stmt();
+	zend_do_extended_stmt(NULL);
 	zend_emit_final_return(0);
 
 	pass_two(CG(active_op_array));
@@ -10841,6 +10847,8 @@ static void zend_compile_shell_exec(znode *result, zend_ast *ast) /* {{{ */
 	zval fn_name;
 	zend_ast *name_ast, *args_ast, *call_ast;
 
+	zend_error(E_DEPRECATED, "The backtick (`) operator is deprecated, use shell_exec() instead");
+
 	ZVAL_STRING(&fn_name, "shell_exec");
 	name_ast = zend_ast_create_zval(&fn_name);
 	args_ast = zend_ast_create_list(1, ZEND_AST_ARG_LIST, expr_ast);
@@ -11607,7 +11615,7 @@ static void zend_compile_stmt(zend_ast *ast) /* {{{ */
 	CG(zend_lineno) = ast->lineno;
 
 	if ((CG(compiler_options) & ZEND_COMPILE_EXTENDED_STMT) && !zend_is_unticked_stmt(ast)) {
-		zend_do_extended_stmt();
+		zend_do_extended_stmt(NULL);
 	}
 
 	switch (ast->kind) {

diff --git a/Zend/zend_object_handlers.c b/Zend/zend_object_handlers.c
@@ -223,6 +223,8 @@ ZEND_API HashTable *zend_std_get_debug_info(zend_object *object, int *is_temp) /
 			return Z_ARRVAL(retval);
 		}
 	} else if (Z_TYPE(retval) == IS_NULL) {
+		zend_error(E_DEPRECATED, "Returning null from %s::__debugInfo() is deprecated, return an empty array instead",
+			ZSTR_VAL(ce->name));
 		*is_temp = 1;
 		ht = zend_new_array(0);
 		return ht;

diff --git a/Zend/zend_opcode.c b/Zend/zend_opcode.c
@@ -903,7 +903,8 @@ static bool keeps_op1_alive(zend_op *opline) {
 	 || opline->opcode == ZEND_MATCH_ERROR
 	 || opline->opcode == ZEND_FETCH_LIST_R
 	 || opline->opcode == ZEND_FETCH_LIST_W
-	 || opline->opcode == ZEND_COPY_TMP) {
+	 || opline->opcode == ZEND_COPY_TMP
+	 || opline->opcode == ZEND_EXT_STMT) {
 		return 1;
 	}
 	ZEND_ASSERT(opline->opcode != ZEND_FE_FETCH_R

diff --git a/ext/date/php_date.stub.php b/ext/date/php_date.stub.php
@@ -54,6 +54,7 @@
  * @var string
  * @cvalue DATE_FORMAT_RFC7231
  */
+#[\Deprecated(since: '8.5', message: "as this format ignores the associated timezone and always uses GMT")]
 const DATE_RFC7231 = "D, d M Y H:i:s \\G\\M\\T";
 
 /**
@@ -287,7 +288,6 @@ function date_sun_info(int $timestamp, float $latitude, float $longitude): array
 
 interface DateTimeInterface
 {
-
     public const string ATOM = DATE_ATOM;
 
     public const string COOKIE = DATE_COOKIE;
@@ -304,6 +304,7 @@ interface DateTimeInterface
 
     public const string RFC1123 = DATE_RFC1123;
 
+    #[\Deprecated(since: '8.5', message: "as this format ignores the associated timezone and always uses GMT")]
     public const string RFC7231 = DATE_RFC7231;
 
     public const string RFC2822 = DATE_RFC2822;

diff --git a/ext/date/php_date_arginfo.h b/ext/date/php_date_arginfo.h
diff --git a/ext/date/tests/DateTimeImmutable_constants.phpt b/ext/date/tests/DateTimeImmutable_constants.phpt
@@ -21,7 +21,10 @@ var_dump(
 );
 
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: Constant DATE_RFC7231 is deprecated since 8.5, as this format ignores the associated timezone and always uses GMT in %s on line %d
+
+Deprecated: Constant DateTimeInterface::RFC7231 is deprecated since 8.5, as this format ignores the associated timezone and always uses GMT in %s on line %d
 bool(true)
 bool(true)
 bool(true)

diff --git a/ext/date/tests/DateTimeInterface_constants.phpt b/ext/date/tests/DateTimeInterface_constants.phpt
@@ -21,7 +21,10 @@ var_dump(
 );
 
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: Constant DATE_RFC7231 is deprecated since 8.5, as this format ignores the associated timezone and always uses GMT in %s on line %d
+
+Deprecated: Constant DateTimeInterface::RFC7231 is deprecated since 8.5, as this format ignores the associated timezone and always uses GMT in %s on line %d
 bool(true)
 bool(true)
 bool(true)

diff --git a/ext/date/tests/DateTime_constants.phpt b/ext/date/tests/DateTime_constants.phpt
@@ -21,7 +21,10 @@ var_dump(
 );
 
 ?>
---EXPECT--
+--EXPECTF--
+Deprecated: Constant DATE_RFC7231 is deprecated since 8.5, as this format ignores the associated timezone and always uses GMT in %s on line %d
+
+Deprecated: Constant DateTimeInterface::RFC7231 is deprecated since 8.5, as this format ignores the associated timezone and always uses GMT in %s on line %d
 bool(true)
 bool(true)
 bool(true)

diff --git a/ext/date/tests/DateTime_format_basic2.phpt b/ext/date/tests/DateTime_format_basic2.phpt
@@ -24,7 +24,7 @@ var_dump($date->format(DateTime::RSS));
 var_dump($date->format(DateTime::W3C));
 
 ?>
---EXPECT--
+--EXPECTF--
 *** Testing date_format() : basic functionality - formatting constants ***
 string(25) "2005-07-14T22:30:41+01:00"
 string(34) "Thursday, 14-Jul-2005 22:30:41 BST"
@@ -34,6 +34,8 @@ string(29) "Thu, 14 Jul 05 22:30:41 +0100"
 string(32) "Thursday, 14-Jul-05 22:30:41 BST"
 string(29) "Thu, 14 Jul 05 22:30:41 +0100"
 string(31) "Thu, 14 Jul 2005 22:30:41 +0100"
+
+Deprecated: Constant DateTimeInterface::RFC7231 is deprecated since 8.5, as this format ignores the associated timezone and always uses GMT in %s on line %d
 string(29) "Thu, 14 Jul 2005 22:30:41 GMT"
 string(31) "Thu, 14 Jul 2005 22:30:41 +0100"
 string(25) "2005-07-14T22:30:41+01:00"