Revert PMC-602

workflow/engine/src/ProcessMaker/Util/helpers.php

@@ -485,33 +485,6 @@ function csrfToken()
     return isset($_SESSION['USR_CSRF_TOKEN']) ? $_SESSION['USR_CSRF_TOKEN'] : '';
 }
 
-/**
- * Check if a string is a valid HTML code
- *
- * @param string $string
- *
- * @return bool
- *
- * @see G::replaceDataField()
- */
-function stringIsValidHtml($string)
-{
-    // To validate we use the DOMDocument class
-    $doc = new DOMDocument('1.0', 'UTF-8');
-
-    // Clean previous errors
-    libxml_clear_errors();
-
-    // This line have to be silenced because if the string is not an HTML a Warning is displayed
-    @$doc->loadHTML($string);
-
-    // Get last error parsing the HTML
-    $libXmlError = libxml_get_last_error();
-
-    // If the attribute "textContent" is empty or exists libxml errors, is not a valid HTML
-    return $doc->textContent !== '' && empty($libXmlError);
-}
-
 // Methods deleted in PHP 7.x, added in this file in order to keep compatibility with old libraries included/used in ProcessMaker
 if (!function_exists('set_magic_quotes_runtime')) {
     function set_magic_quotes_runtime($value) {