diff --git a/ext/standard/basic_functions.c b/ext/standard/basic_functions.c
index 5123174569fa3..f8f6747200d7d 100755
--- a/ext/standard/basic_functions.c
+++ b/ext/standard/basic_functions.c
@@ -30,6 +30,7 @@
 #include "ext/session/php_session.h"
 #include "zend_exceptions.h"
 #include "zend_attributes.h"
+#include "zend_ini.h"
 #include "zend_operators.h"
 #include "ext/standard/php_dns.h"
 #include "ext/standard/php_uuencode.h"
@@ -1971,6 +1972,25 @@ PHP_FUNCTION(highlight_string)
 }
 /* }}} */
 
+/* {{{ Get interpreted size from the ini shorthand syntax */
+PHP_FUNCTION(ini_parse_quantity)
+{
+	zend_string *shorthand;
+	zend_string *errstr;
+
+	ZEND_PARSE_PARAMETERS_START(1, 1)
+		Z_PARAM_STR(shorthand)
+	ZEND_PARSE_PARAMETERS_END();
+
+	RETVAL_LONG(zend_ini_parse_quantity(shorthand, &errstr));
+
+	if (errstr) {
+		zend_error(E_WARNING, "%s", ZSTR_VAL(errstr));
+		zend_string_release(errstr);
+	}
+}
+/* }}} */
+
 /* {{{ Get a configuration option */
 PHP_FUNCTION(ini_get)
 {
diff --git a/ext/standard/basic_functions.stub.php b/ext/standard/basic_functions.stub.php
index 5020fa4d2897f..07aefbfbef60b 100755
--- a/ext/standard/basic_functions.stub.php
+++ b/ext/standard/basic_functions.stub.php
@@ -488,6 +488,8 @@ function ini_alter(string $option, string|int|float|bool|null $value): string|fa
 
 function ini_restore(string $option): void {}
 
+function ini_parse_quantity(string $shorthand): int {}
+
 /** @refcount 1 */
 function set_include_path(string $include_path): string|false {}
 
diff --git a/ext/standard/basic_functions_arginfo.h b/ext/standard/basic_functions_arginfo.h
index 0b6881a99bd17..5d17552629c2a 100644
--- a/ext/standard/basic_functions_arginfo.h
+++ b/ext/standard/basic_functions_arginfo.h
@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 90093c63384f7ba56b1c4073b60219cb82843b98 */
+ * Stub hash: 978052ddd734a50694d59f6e92bbf5f1cc946bd2 */
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_set_time_limit, 0, 1, _IS_BOOL, 0)
 	ZEND_ARG_TYPE_INFO(0, seconds, IS_LONG, 0)
@@ -505,6 +505,10 @@ ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_ini_restore, 0, 1, IS_VOID, 0)
 	ZEND_ARG_TYPE_INFO(0, option, IS_STRING, 0)
 ZEND_END_ARG_INFO()
 
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_ini_parse_quantity, 0, 1, IS_LONG, 0)
+	ZEND_ARG_TYPE_INFO(0, shorthand, IS_STRING, 0)
+ZEND_END_ARG_INFO()
+
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_set_include_path, 0, 1, MAY_BE_STRING|MAY_BE_FALSE)
 	ZEND_ARG_TYPE_INFO(0, include_path, IS_STRING, 0)
 ZEND_END_ARG_INFO()
@@ -2362,6 +2366,7 @@ ZEND_FUNCTION(ini_get);
 ZEND_FUNCTION(ini_get_all);
 ZEND_FUNCTION(ini_set);
 ZEND_FUNCTION(ini_restore);
+ZEND_FUNCTION(ini_parse_quantity);
 ZEND_FUNCTION(set_include_path);
 ZEND_FUNCTION(get_include_path);
 ZEND_FUNCTION(print_r);
@@ -2994,6 +2999,7 @@ static const zend_function_entry ext_functions[] = {
 	ZEND_FE(ini_set, arginfo_ini_set)
 	ZEND_FALIAS(ini_alter, ini_set, arginfo_ini_alter)
 	ZEND_FE(ini_restore, arginfo_ini_restore)
+	ZEND_FE(ini_parse_quantity, arginfo_ini_parse_quantity)
 	ZEND_FE(set_include_path, arginfo_set_include_path)
 	ZEND_FE(get_include_path, arginfo_get_include_path)
 	ZEND_FE(print_r, arginfo_print_r)
diff --git a/tests/basic/ini_parse_quantity_basic.phpt b/tests/basic/ini_parse_quantity_basic.phpt
new file mode 100644
index 0000000000000..af9a2776f113b
--- /dev/null
+++ b/tests/basic/ini_parse_quantity_basic.phpt
@@ -0,0 +1,36 @@
+--TEST--
+ini_parse_quantity() function - basic test for ini_parse_quantity()
+--INI--
+error_reporting = E_ALL ^ E_WARNING
+--FILE--
+<?php
+foreach (array(
+    '-1',
+    '-0x412',
+    '0',
+    '1',
+    '1b',
+    '1k',
+    '1m',
+    '1g',
+    '1gb',
+    '14.2mb',
+    '14.2bm',
+    'boat'
+) as $input) {
+    echo ini_parse_quantity( $input ) . PHP_EOL;
+}
+?>
+--EXPECT--
+-1
+-1042
+0
+1
+1
+1024
+1048576
+1073741824
+1
+14
+14680064
+0
diff --git a/tests/basic/ini_parse_quantity_warnings.phpt b/tests/basic/ini_parse_quantity_warnings.phpt
new file mode 100644
index 0000000000000..f18753c853151
--- /dev/null
+++ b/tests/basic/ini_parse_quantity_warnings.phpt
@@ -0,0 +1,14 @@
+--TEST--
+ini_parse_quantity() function - warns when given inappropriate values
+--INI--
+error_reporting = E_ALL
+--FILE--
+<?php
+ini_parse_quantity('-1');
+ini_parse_quantity('1mb');
+ini_parse_quantity('256 then skip a few then g')
+?>
+--EXPECTF--
+Warning: Invalid quantity "1mb": unknown multipler "b", interpreting as "1" for backwards compatibility in %sini_parse_quantity_warnings.php on line 3
+
+Warning: Invalid quantity "256 then skip a few then g", interpreting as "256 g" for backwards compatibility in %sini_parse_quantity_warnings.php on line 4