Add PHP 7.4 polyfill

composer.json

@@ -18,6 +18,7 @@
         "symfony/polyfill-intl-icu": "*",
         "symfony/polyfill-intl-idn": "*",
         "symfony/polyfill-mbstring": "*",
+        "symfony/polyfill-php74": "*",
         "symfony/polyfill-php80": "*",
         "composer/composer": "~1.0",
         "composer/installers": "~1.0",

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "fa18a53e516b3fc98e56fd5dfe8a6304",
+    "content-hash": "882504a81fb8c4daf946022b51b73f93",
     "packages": [
         {
             "name": "akaunting/money",
@@ -7995,6 +7995,86 @@
             ],
             "time": "2021-01-07T16:49:33+00:00"
         },
+        {
+            "name": "symfony/polyfill-php74",
+            "version": "v1.22.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php74.git",
+                "reference": "577e147350331efeb816897e004d85e6e765daaf"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-php74/zipball/577e147350331efeb816897e004d85e6e765daaf",
+                "reference": "577e147350331efeb816897e004d85e6e765daaf",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "1.22-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php74\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Ion Bazan",
+                    "email": "ion.bazan@gmail.com"
+                },
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 7.4+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-php74/tree/v1.22.1"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-01-07T16:49:33+00:00"
+        },
         {
             "name": "symfony/polyfill-php80",
             "version": "v1.22.1",