Update composer.json examples

src/guides/v2.3/extension-dev-guide/build/composer-integration.md

@@ -35,7 +35,7 @@ Here is the example of composer.json file.
       "AFL-3.0"
     ],
     "require": {
-      "php": "~7.1.3||~7.2.0||~7.3.0"
+      "php": "~7.2.0||~7.3.0"
     },
     "autoload": {
       "files": [ "registration.php" ],

src/guides/v2.3/extension-dev-guide/build/create_component.md

@@ -51,7 +51,7 @@ Refer to [Module version dependencies]({{ page.baseurl }}/extension-dev-guide/ve
     "name": "your-name/module-Acme",
     "description": "Test component for Magento 2",
     "require": {
-        "php": "~7.1.3||~7.2.0",
+        "php": "~7.2.0||~7.3.0",
         "magento/module-store": "102.1",
         "magento/module-catalog": "102.1",
         "magento/module-catalog-inventory": "102.1",

src/guides/v2.3/extension-dev-guide/package/package_module.md

@@ -49,7 +49,7 @@ The following example is a `composer.json` for a metapackage:
     "version": "2.0.0",
     "type": "metapackage",
     "require": {
-        "php": "~7.1.3|~7.2.0",
+        "php": "~7.2.0||~7.3.0",
         "zendframework/zend-stdlib": "~2.4.6",
         "zendframework/zend-code": "~2.4.6",
         "zendframework/zend-server": "~2.4.6",
@@ -99,7 +99,7 @@ The following example is a `composer.json` file for a module:
     "AFL-3.0"
   ],
   "require": {
-    "php": "~7.1.3|~7.2.0",
+    "php": "~7.2.0||~7.3.0",
     "magento/framework": "~100.0.4"
   },
   "autoload": {

src/guides/v2.3/howdoi/checkout/checkout-add-custom-carrier.md

@@ -47,7 +47,7 @@ ComponentRegistrar::register(
     "name": "vendor/custom-shipping",
     "description": "Custom shipping module",
     "require": {
-        "php": "~7.1.3||~7.2.0",
+        "php": "~7.2.0||~7.3.0",
         "magento/framework": "102.0.*",
         "magento/module-backend": "101.0.*",
         "magento/module-catalog": "103.0.*",