tap52384/php_html_validator.php

## php_html_validator.php
/**
    * Sends an HTML snippet to the W3C validator and returns the result as JSON.
    * @param string $html HTML code
    * @return string
    * @link https://github.com/validator/validator/wiki/Service:-Input:-POST-body
    * @link https://gist.github.com/tap52384/60cc27fd0a76869cc38b#file-php_html_validator-php
    */
    public static function validateHtml($html = '')
    {
        $default = array(
          'messages' => array(),
          'source' => array(
            'type' => 'text/html',
            'encoding' => 'utf-8',
            'code' => ''
          )
        );

        $default = json_encode($default);

        // replace special characters
        $html = str_replace("\r", "", $html);
        $html = str_replace("\n", "", $html);

        if (!is_string($html) || empty($html) || strlen(trim($html)) === 0) {
            return $default;
        }

        // insert the code within a complete HTML document
        $html = '<!DOCTYPE html><html><head><title>Test Document</title></head><body>'
          . $html . '</body></html>';

        // set the headers, including the required multipart boundary
        $headers = array(
          'Content-Type: multipart/form-data; boundary=---------------------------' .
          strlen($html),
          'User-Agent: ' . getenv('HTTP_USER_AGENT')
        );

        // url for the validator
        $url = 'https://validator.w3.org/nu/?out=json&parser=html5';

        // options for the  validator
        $content = array(
          'parser' => 'html5',
          'out' => 'json',
          'showsource' => 'yes',
          'asciiquotes' => 'yes',
          'content' => $html
        );

        // send the html to the w3c validator via curl and return the result
        // initiate cURL (a cURL handle)
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $content);
        curl_setopt($ch, CURLOPT_USERAGENT, getenv('HTTP_USER_AGENT'));
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $result = curl_exec($ch);
        if (!is_int($ch) &&
        $ch !== false &&
        $ch !== null &&
        !is_bool($ch)) {
            curl_close($ch);
        }

        return $result !== false ? $result : $default;
    }
	/**
	* Sends an HTML snippet to the W3C validator and returns the result as JSON.
	* @param string $html HTML code
	* @return string
	* @link https://github.com/validator/validator/wiki/Service:-Input:-POST-body
	* @link https://gist.github.com/tap52384/60cc27fd0a76869cc38b#file-php_html_validator-php
	*/
	public static function validateHtml($html = '')
	{
	$default = array(
	'messages' => array(),
	'source' => array(
	'type' => 'text/html',
	'encoding' => 'utf-8',
	'code' => ''
	)
	);

	$default = json_encode($default);

	// replace special characters
	$html = str_replace("\r", "", $html);
	$html = str_replace("\n", "", $html);

	if (!is_string($html) \|\| empty($html) \|\| strlen(trim($html)) === 0) {
	return $default;
	}

	// insert the code within a complete HTML document
	$html = '<!DOCTYPE html><html><head><title>Test Document</title></head><body>'
	. $html . '</body></html>';

	// set the headers, including the required multipart boundary
	$headers = array(
	'Content-Type: multipart/form-data; boundary=---------------------------' .
	strlen($html),
	'User-Agent: ' . getenv('HTTP_USER_AGENT')
	);

	// url for the validator
	$url = 'https://validator.w3.org/nu/?out=json&parser=html5';

	// options for the validator
	$content = array(
	'parser' => 'html5',
	'out' => 'json',
	'showsource' => 'yes',
	'asciiquotes' => 'yes',
	'content' => $html
	);

	// send the html to the w3c validator via curl and return the result
	// initiate cURL (a cURL handle)
	$ch = curl_init($url);
	curl_setopt($ch, CURLOPT_HEADER, 0);
	curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
	curl_setopt($ch, CURLOPT_POST, true);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $content);
	curl_setopt($ch, CURLOPT_USERAGENT, getenv('HTTP_USER_AGENT'));
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	$result = curl_exec($ch);
	if (!is_int($ch) &&
	$ch !== false &&
	$ch !== null &&
	!is_bool($ch)) {
	curl_close($ch);
	}

	return $result !== false ? $result : $default;
	}