Created
May 14, 2012 23:50
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Updated plugin file [fixes: wp_debug errors, variable misspelling, and code formatting]
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| <?php | |
| /* | |
| Plugin Name: SEO Friendly Images | |
| Plugin URI: http://www.prelovac.com/vladimir/wordpress-plugins/seo-friendly-images | |
| Description: Automatically adds alt and title attributes to all your images. Improves traffic from search results and makes them W3C/xHTML valid as well. | |
| Version: 2.7.0 | |
| Author: Vladimir Prelovac | |
| Author URI: http://www.prelovac.com/vladimir | |
| To-Do: | |
| - localization (done in premium version) | |
| - integration module with google xml sitempas to support images sitemap (done in premium version) | |
| Copyright 2008 Vladimir Prelovac vprelovac@gmail.com | |
| */ | |
| $seo_friendly_images_localversion="2.6"; | |
| $sfi_plugin_url = trailingslashit( get_bloginfo('wpurl') ).PLUGINDIR.'/'. dirname( plugin_basename(__FILE__) ); | |
| function seo_friendly_images_add_pages() { | |
| add_options_page('SEO Friendly Images options', 'SEO Friendly Images', 'manage_options', __FILE__, 'seo_friendly_images_options_page'); | |
| } | |
| function seo_friendly_images_admin_notice() { | |
| echo '<div class="updated" style="text-align: center;"><p style="font-size:13px">Get the paid version of <a target="_blank" href="http://www.prelovac.com/products/seo-friendly-images">SEO Friendly Images</a> with more features and support. <a target="_blank" href="http://www.prelovac.com/products/seo-friendly-images">Click to learn what is new</a></p><p style="text-align:right"><a href="options-general.php?page=seo-image/seo-friendly-images.php¬ice=1">hide</a></p></div>'; | |
| } | |
| // Options Page | |
| function seo_friendly_images_options_page() { | |
| global $seo_friendly_images_localversion; | |
| $status=seo_friendly_images_getinfo(); | |
| $theVersion = ( isset($status[1]) ? $status[1] : ''); | |
| $theMessage = ( isset($status[3]) ? $status[3] : ''); | |
| if( (version_compare(strval($theVersion), strval($seo_friendly_images_localversion), '>') == 1) ) { | |
| $msg = 'Latest version available '.' <strong>'.$theVersion.'</strong><br/>'.$theMessage; | |
| _e('<div id="message" class="updated fade"><p>' . $msg . '</p></div>'); | |
| } | |
| // If form was submitted | |
| if (isset($_POST['submitted'])) { | |
| $alt_text=(!isset($_POST['alttext'])? '': $_POST['alttext']); | |
| $title_text=(!isset($_POST['titletext'])? '': $_POST['titletext']); | |
| $override=(!isset($_POST['override'])? 'off': 'on'); | |
| $override_title=(!isset($_POST['override_title'])? 'off': 'on'); | |
| update_option('seo_friendly_images_alt', $alt_text); | |
| update_option('seo_friendly_images_title', $title_text ); | |
| update_option('seo_friendly_images_override', $override ); | |
| update_option('seo_friendly_images_override_title', $override_title ); | |
| $msg_status = 'SEO Friendly Images options saved.'; | |
| // Show message | |
| _e('<div id="message" class="updated fade"><p>' . $msg_status . '</p></div>'); | |
| } | |
| if (isset($_GET['notice'])) { | |
| if ($_GET['notice']==1) { | |
| update_option('seo_friendly_images_notice', 1); | |
| } | |
| } | |
| // Fetch code from DB | |
| $alt_text = get_option('seo_friendly_images_alt'); | |
| $title_text = get_option('seo_friendly_images_title'); | |
| $override =( get_option('seo_friendly_images_override')=='on' ) ? "checked":""; | |
| $override_title =( get_option('seo_friendly_images_override_title')=='on' ) ? "checked":""; | |
| global $sfi_plugin_url; | |
| $imgpath=$sfi_plugin_url.'/i'; | |
| $action_url=$_SERVER['REQUEST_URI']; | |
| // Configuration Page | |
| echo <<<END | |
| <div class="wrap"> | |
| <h2>SEO Friendly Images $seo_friendly_images_localversion</h2> | |
| <div id="poststuff" style="margin-top:10px;"> | |
| <div id="sideblock" style="float:right;width:270px;margin-left:10px;"> | |
| <iframe width=270 height=800 frameborder="0" src="http://www.prelovac.com/plugin/news.php?id=2&utm_source=plugin&utm_medium=plugin&utm_campaign=SEO%2BFriendly%2BImages"></iframe> | |
| </div> | |
| </div> | |
| <div id="mainblock" style="width:710px"> | |
| <form name="sfiform" action="$action_url" method="post"> | |
| <div class="dbx-content"> | |
| <input type="hidden" name="submitted" value="1" /> | |
| <h2>General Options</h2> | |
| <p>SEO Friendly Images automatically adds alt and title attributes to all your images in all your posts specified by parameters below.</p> | |
| <p>You can enter any text in the field including two special tags:</p> | |
| <ul> | |
| <li>%title - replaces post title</li> | |
| <li>%name - replaces image file name (without extension)</li> | |
| <li>%category - replaces post category</li> | |
| <li>%tags - replaces post tags</li> | |
| </ul> | |
| <h4>Images options</h4> | |
| <div> | |
| <label for="alt_text"><b>ALT</b> attribute (example: %name %title)</label><br> | |
| <input style="border:1px solid #D1D1D1;width:165px;" id="alt_text" name="alttext" value="$alt_text"/> | |
| </div> | |
| <br> | |
| <div> | |
| <label for="title_text"><b>TITLE</b> attribute (example: %name photo)</label><br> | |
| <input style="border:1px solid #D1D1D1;width:165px;" id="title_text" name="titletext" value="$title_text"/> | |
| </div> | |
| <br/> | |
| <div> | |
| <input id="check1" type="checkbox" name="override" $override /> | |
| <label for="check1">Override default Wordpress image alt tag (recommended)</label> | |
| </div> | |
| <br/> | |
| <div> | |
| <input id="check2" type="checkbox" name="override_title" $override_title /> | |
| <label for="check2">Override default Wordpress image title</label> | |
| </div> | |
| <br/><br/> | |
| <p> | |
| Example:<br/> | |
| In a post titled Car Pictures there is a picture named Ferrari.jpg<br/><br/> | |
| Setting alt attribute to "%name %title" will produce alt="Ferrari Car Pictures"<br/> | |
| Setting title attribute to "%name photo" will produce title="Ferrari photo" | |
| </p> | |
| <div class="submit"><input type="submit" name="Submit" value="Update options" /></div> | |
| </div> | |
| </form> | |
| <br/><br/><h3> </h3> | |
| </div> | |
| </div> | |
| <h5>Another fine WordPress plugin by <a href="http://www.prelovac.com/vladimir/">Vladimir Prelovac</a></h5> | |
| END; | |
| } | |
| // Add Options Page | |
| add_action('admin_menu', 'seo_friendly_images_add_pages'); | |
| function remove_extension($name) { | |
| return preg_replace('/(.+)\..*$/', '$1', $name); | |
| } | |
| function seo_friendly_images_process($matches) { | |
| global $post; | |
| $title = $post->post_title; | |
| $alttext_rep = get_option('seo_friendly_images_alt'); | |
| $titletext_rep = get_option('seo_friendly_images_title'); | |
| $override= get_option('seo_friendly_images_override'); | |
| $override_title= get_option('seo_friendly_images_override_title'); | |
| # take care of unsusal endings | |
| $matches[0]=preg_replace('|([\'"])[/ ]*$|', '\1 /', $matches[0]); | |
| ### Normalize spacing around attributes. | |
| $matches[0] = preg_replace('/\s*=\s*/', '=', substr($matches[0],0,strlen($matches[0])-2)); | |
| ### Get source. | |
| preg_match('/src\s*=\s*([\'"])?((?(1).+?|[^\s>]+))(?(1)\1)/', $matches[0], $source); | |
| $saved=$source[2]; | |
| ### Swap with file's base name. | |
| preg_match('%[^/]+(?=\.[a-z]{3}\z)%', $source[2], $source); | |
| ### Separate URL by attributes. | |
| $pieces = preg_split('/(\w+=)/', $matches[0], -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY); | |
| ### Add missing pieces. | |
| $postcats=get_the_category(); | |
| $cats=""; | |
| if ($postcats) { | |
| foreach($postcats as $cat) { | |
| $cats = $cat->slug. ' '. $cats; | |
| } | |
| } | |
| $posttags = get_the_tags(); | |
| $tags=""; | |
| if ($posttags) { | |
| foreach($posttags as $tag) { | |
| $tags = $tag->name . ' ' . $tags; | |
| } | |
| } | |
| if (!in_array('title=', $pieces) || $override_title=="on") { | |
| $titletext_rep=str_replace("%title", $post->post_title, $titletext_rep); | |
| $titletext_rep=str_replace("%name", $source[0], $titletext_rep); | |
| $titletext_rep=str_replace("%category", $cats, $titletext_rep); | |
| $titletext_rep=str_replace("%tags", $tags, $titletext_rep); | |
| $titletext_rep=str_replace('"', '', $titletext_rep); | |
| $titletext_rep=str_replace("'", "", $titletext_rep); | |
| $titletext_rep=str_replace("_", " ", $titletext_rep); | |
| $titletext_rep=str_replace("-", " ", $titletext_rep); | |
| //$titletext_rep=ucwords(strtolower($titletext_rep)); | |
| if (!in_array('title=', $pieces)) { | |
| array_push($pieces, ' title="' . $titletext_rep . '"'); | |
| } else { | |
| $key=array_search('title=',$pieces); | |
| $pieces[$key+1]='"'.$titletext_rep.'" '; | |
| } | |
| } | |
| if (!in_array('alt=', $pieces) || $override=="on" ) { | |
| $alttext_rep=str_replace("%title", $post->post_title, $alttext_rep); | |
| $alttext_rep=str_replace("%name", $source[0], $alttext_rep); | |
| $alttext_rep=str_replace("%category", $cats, $alttext_rep); | |
| $alttext_rep=str_replace("%tags", $tags, $alttext_rep); | |
| $alttext_rep=str_replace("\"", "", $alttext_rep); | |
| $alttext_rep=str_replace("'", "", $alttext_rep); | |
| $alttext_rep=(str_replace("-", " ", $alttext_rep)); | |
| $alttext_rep=(str_replace("_", " ", $alttext_rep)); | |
| if (!in_array('alt=', $pieces)) { | |
| array_push($pieces, ' alt="' . $alttext_rep . '"'); | |
| } else { | |
| $key=array_search('alt=',$pieces); | |
| $pieces[$key+1]='"'.$alttext_rep.'" '; | |
| } | |
| } | |
| return implode('', $pieces).' /'; | |
| } | |
| function seo_friendly_images($content) { | |
| return preg_replace_callback('/<img[^>]+/', 'seo_friendly_images_process', $content); | |
| } | |
| add_filter('the_content', 'seo_friendly_images', 100); | |
| //add_action( 'after_plugin_row', 'seo_friendly_images_check_plugin_version' ); | |
| function seo_friendly_images_getinfo() { | |
| $checkfile = "http://svn.wp-plugins.org/seo-image/trunk/seo-friendly-images.chk"; | |
| $status=array(); | |
| return $status; | |
| $vcheck = wp_remote_fopen($checkfile); | |
| if($vcheck) { | |
| $version = $seo_friendly_images_localversion; | |
| $status = explode('@', $vcheck); | |
| return $status; | |
| } | |
| } | |
| function seo_friendly_images_check_plugin_version($plugin) { | |
| global $plugindir, $seo_friendly_images_localversion; | |
| if( strpos($plugin,'seo-friendly-images.php')!==false ) { | |
| $status=seo_friendly_images_getinfo(); | |
| $theVersion = $status[1]; | |
| $theMessage = $status[3]; | |
| if( (version_compare(strval($theVersion), strval($seo_friendly_images_localversion), '>') == 1) ) { | |
| $msg = 'Latest version available '.' <strong>'.$theVersion.'</strong><br/>'.$theMessage; | |
| echo '<td colspan="5" class="plugin-update" style="line-height:1.2em;">'.$msg.'</td>'; | |
| } else { | |
| return; | |
| } | |
| } | |
| } | |
| function seo_friendly_images_install() { | |
| if(!get_option('seo_friendly_images_alt')) { | |
| add_option('seo_friendly_images_alt', '%name %title'); | |
| } | |
| if(!get_option('seo_friendly_images_title')) { | |
| add_option('seo_friendly_images_title', '%title'); | |
| } | |
| if(get_option('seo_friendly_images_override' == '') || !get_option('seo_friendly_images_override')) { | |
| add_option('seo_friendly_images_override', 'on'); | |
| } | |
| if(get_option('seo_friendly_images_override_title' == '') || !get_option('seo_friendly_images_override_title')) { | |
| add_option('seo_friendly_images_override_title', 'off'); | |
| } | |
| if (!get_option('seo_friendly_images_notice')) | |
| add_action('admin_notices', 'seo_friendly_images_admin_notice'); | |
| } | |
| add_action( 'plugins_loaded', 'seo_friendly_images_install' ); |
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