diff --git a/src/Util/StringLiteralFormatter.php b/src/Util/StringLiteralFormatter.php
index 523bad9..2d78a5f 100644
--- a/src/Util/StringLiteralFormatter.php
+++ b/src/Util/StringLiteralFormatter.php
@@ -9,6 +9,29 @@
  */
 class StringLiteralFormatter
 {
+    const ESCAPE_SEQUENCES = [
+        '\\u0000', '\\u0001', '\\u0002', '\\u0003', '\\u0004', '\\u0005', '\\u0006', '\\u0007',
+        '\\b',     '\\t',     '\\n',     '\\u000B', '\\f',     '\\r',     '\\u000E', '\\u000F',
+        '\\u0010', '\\u0011', '\\u0012', '\\u0013', '\\u0014', '\\u0015', '\\u0016', '\\u0017',
+        '\\u0018', '\\u0019', '\\u001A', '\\u001B', '\\u001C', '\\u001D', '\\u001E', '\\u001F',
+        '',        '',        '\\"',     '',        '',        '',        '',        '',
+        '',        '',        '',        '',        '',        '',        '',        '', // 2F
+        '',        '',        '',        '',        '',        '',        '',        '',
+        '',        '',        '',        '',        '',        '',        '',        '', // 3F
+        '',        '',        '',        '',        '',        '',        '',        '',
+        '',        '',        '',        '',        '',        '',        '',        '', // 4F
+        '',        '',        '',        '',        '',        '',        '',        '',
+        '',        '',        '',        '',        '\\\\',    '',        '',        '', // 5F
+        '',        '',        '',        '',        '',        '',        '',        '',
+        '',        '',        '',        '',        '',        '',        '',        '', // 6F
+        '',        '',        '',        '',        '',        '',        '',        '',
+        '',        '',        '',        '',        '',        '',        '',        '\\u007F',
+        '\\u0080', '\\u0081', '\\u0082', '\\u0083', '\\u0084', '\\u0085', '\\u0086', '\\u0087',
+        '\\u0088', '\\u0089', '\\u008A', '\\u008B', '\\u008C', '\\u008D', '\\u008E', '\\u008F',
+        '\\u0090', '\\u0091', '\\u0092', '\\u0093', '\\u0094', '\\u0095', '\\u0096', '\\u0097',
+        '\\u0098', '\\u0099', '\\u009A', '\\u009B', '\\u009C', '\\u009D', '\\u009E', '\\u009F',
+    ];
+
     /**
      * Converts the value provided to the equivalent RHS value to be put in a file declaration
      *
@@ -20,10 +43,13 @@ public static function formatValueForRHS($value): string
     {
         if (is_string($value)) {
             if (!static::isVariable($value)) {
-                $value = str_replace('"', '\"', $value);
                 if (strpos($value, "\n") !== false) {
                     $value = '"""' . $value . '"""';
                 } else {
+                    $value = preg_replace_callback('/[\x00-\x1f\x22\x5c\x7f-\x9f]/u', function(array $matches) {
+                        $str = $matches[0];
+                        return self::ESCAPE_SEQUENCES[ord($str[0])];
+                    }, $value);
                     $value = "\"$value\"";
                 }
             }
diff --git a/tests/StringLiteralFormatterTest.php b/tests/StringLiteralFormatterTest.php
index 792392b..1888ec6 100644
--- a/tests/StringLiteralFormatterTest.php
+++ b/tests/StringLiteralFormatterTest.php
@@ -34,17 +34,20 @@ public function testFormatForClassRHSValue()
         $formattedString = StringLiteralFormatter::formatValueForRHS("\"quotedString\"");
         $this->assertEquals('"\"quotedString\""', $formattedString);
 
+        $formattedString = StringLiteralFormatter::formatValueForRHS('<span class=\\"quotedStringEscaped\\" id="unescaped"></span>');
+        $this->assertEquals('"<span class=\\\\\"quotedStringEscaped\\\\\" id=\"unescaped\"></span>"', $formattedString);
+
         $formattedString = StringLiteralFormatter::formatValueForRHS('\'singleQuotes\'');
         $this->assertEquals('"\'singleQuotes\'"', $formattedString);
 
         $formattedString = StringLiteralFormatter::formatValueForRHS("with \n newlines");
         $this->assertEquals("\"\"\"with \n newlines\"\"\"", $formattedString);
 
-	$formattedString = StringLiteralFormatter::formatValueForRHS('$var');
-	$this->assertEquals('$var', $formattedString);
+        $formattedString = StringLiteralFormatter::formatValueForRHS('$var');
+        $this->assertEquals('$var', $formattedString);
 
-	$formattedString = StringLiteralFormatter::formatValueForRHS('$400');
-	$this->assertEquals('"$400"', $formattedString);
+        $formattedString = StringLiteralFormatter::formatValueForRHS('$400');
+        $this->assertEquals('"$400"', $formattedString);
 
         // Integer tests
         $integerString = StringLiteralFormatter::formatValueForRHS(25);