99 lines
2.9 KiB
PHP
99 lines
2.9 KiB
PHP
<?php
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/**
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* Gravatar Class File for PICKLES
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*
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* PHP version 5
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*
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* Licensed under The MIT License
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* Redistribution of these files must retain the above copyright notice.
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*
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* @author Joshua Sherman <josh@gravityblvd.com>
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* @copyright Copyright 2007-2014, Joshua Sherman
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* @license http://www.opensource.org/licenses/mit-license.html
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* @package PICKLES
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* @link https://github.com/joshtronic/pickles
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*/
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/**
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* Gravatar API Interface
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*
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* @link http://en.gravatar.com/site/implement/
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*/
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class API_Gravatar
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{
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/**
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* Hash
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*
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* Generates a hash from the passed string that can then be used for
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* fetching an image or profile from Gravatar.com
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*
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* @static
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* @param string $string string to hash, should be an email address
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* @return string resulting hash
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*/
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public static function hash($string)
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{
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// Trims whitespace, lowers the case then applies MD5
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return md5(strtolower(trim($string)));
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}
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/**
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* img
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*
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* Generates an img tag requesting a Gravatar based on the parameters.
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*
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* @static
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* @param string $email address to use for the hash
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* @param integer $size optional size of the image requested
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* @param string $default optional default style or image to generate
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* @param string $rating optional filter by a certain rating
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* @param boolean $force optional force the default avatar
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* @param boolean $secure optional whether to use the SSL URL
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* @param array $attributes optional any additional parameters to include
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* @return string an img tag requesting a Gravatar
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*/
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public static function img($email, $size = 80, $default = 'gravatar', $rating = 'g', $force = false, $secure = false, $attributes = false)
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{
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if (!filter_var($email, FILTER_VALIDATE_EMAIL))
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{
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throw new Exception('Invalid email address.');
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}
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elseif ($size < 1 || $size > 2048)
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{
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throw new Exception('Invalid size parameter, expecting an integer between 1 and 2048.');
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}
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elseif (!in_array($default, ['gravatar', '404', 'mm', 'identicon', 'monsterid', 'wavatar', 'retro', 'blank'])
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&& !filter_var($default, FILTER_VALIDATE_URL))
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{
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throw new Exception('Invalid default parameter, expecting gravatar, 404, mm, identicon, monsterid, wavatar, retro, blank or a valid URL.');
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}
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elseif (!in_array($rating, ['g', 'pg', 'r', 'x']))
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{
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throw new Exception('Invalid rating parameter, expecting g, pg, r or x.');
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}
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else
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{
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$default = $default == 'gravatar' ? false : urlencode($default);
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$html = '<img src="'
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. ($secure ? 'https://secure' : 'http://www') . '.gravatar.com/avatar/' . self::hash($email)
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. sprintf('?s=%s&d=%s&r=%s', $size, urlencode($default), $rating, $force)
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. ($force ? '&f=y' : '') . '"';
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if (is_array($attributes))
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{
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foreach ($attributes as $attribute => $value)
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{
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$html .= sprintf(' %s="%s"', $attribute, $value);
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}
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}
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$html .= '>';
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return $html;
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}
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}
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}
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?>
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