Check for required extensions in the script itself instead of composer.json

Author: rodrigoprimo

bin/phpcs-check-doc-examples

@@ -20,10 +20,22 @@
 
 if (PHP_VERSION_ID < 70000) {
     $error = 'ERROR: This script requires PHP version 7.0.0 or greater.' . PHP_EOL;
-    fwrite(STDERR, $error);
+    \fwrite(STDERR, $error);
     exit(1);
 }
 
+if (\extension_loaded('libxml') === false) {
+	$error = 'ERROR: This script requires the libxml extension.' . PHP_EOL;
+	\fwrite(STDERR, $error);
+	exit(1);
+}
+
+if (\extension_loaded('dom') === false) {
+	$error = 'ERROR: This script requires the DOM extension.' . PHP_EOL;
+	\fwrite(STDERR, $error);
+	exit(1);
+}
+
 require_once __DIR__ . '/../Scripts/DocCodeExamples/Functions.php';
 
 $devToolsAutoloadLocations = [

composer.json

@@ -24,9 +24,7 @@
     "require" : {
         "php" : ">=5.4",
         "squizlabs/php_codesniffer" : "^3.1.0",
-        "dealerdirect/phpcodesniffer-composer-installer" : "^0.4.1 || ^0.5 || ^0.6.2 || ^0.7 || ^1.0",
-        "ext-dom": "*",
-        "ext-libxml": "*"
+        "dealerdirect/phpcodesniffer-composer-installer" : "^0.4.1 || ^0.5 || ^0.6.2 || ^0.7 || ^1.0"
     },
     "require-dev" : {
         "roave/security-advisories" : "dev-master",