Add experimental PHP support (#167)

Add experimental PHP support

Author: jakewtaylor

lib/index.js

@@ -98,8 +98,16 @@ export default {
           return null;
         }
 
+        const removePHP = str => str.replace(/<\?(?:php|=)?(?:[\s\S])+?\?>/gi, (match) => {
+          const newlines = match.match(/\r?\n|\r/g);
+          const newlineCount = newlines ? newlines.length : 0;
+
+          return '\n'.repeat(newlineCount);
+        });
+
         const fileText = editor.getText();
-        if (!fileText) {
+        const fileTextStripped = removePHP(fileText);
+        if (!fileTextStripped) {
           return [];
         }
 
@@ -108,7 +116,7 @@ export default {
 
         const ruleset = await getConfig(filePath);
 
-        const messages = HTMLHint.verify(fileText, ruleset || undefined);
+        const messages = HTMLHint.verify(fileTextStripped, ruleset || undefined);
 
         if (editor.getText() !== fileText) {
           // Editor contents have changed, tell Linter not to update