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For security reasons, you can’t directly reach the page outside the iframe from inside it. However, we can retrieve information from the browser. To retrieve the parent’s address, i.e. the URL of the page where the iframe is added, just write this: <script type=”text/javascript”> var url = (window.location != window.parent.location) ? document.referrer : document.location; alert(url); … Read more
A small script to count the number of words and/or characters in an input or textarea field <input id=”text” name=”text” type=”text” /> <span id=”count”></span> We place the script in jQuery’s ready function to make sure the HTML has been fully loaded. $(document).ready(function() { count($(“#text”), $(“#count”)); $(“#text”).keyup(function() { count($(“#text”), $(“#count”)); }); }); function count(src, dest) { … Read more
A lot of code uses strlen to get the size of a string. The problem: strlen returns the number of bytes, not the number of characters. As soon as a string contains accented letters or emojis, the result is wrong. The problem with strlen In UTF-8, a character such as “é” takes two bytes, so … Read more
A small function to replace accented characters with their unaccented equivalent. function normalize_str($str) { $invalid = array(‘Š’=>’S’, ‘š’=>’s’, ‘Đ’=>’Dj’, ‘đ’=>’dj’, ‘Ž’=>’Z’, ‘ž’=>’z’, ‘Č’=>’C’, ‘č’=>’c’, ‘Ć’=>’C’, ‘ć’=>’c’, ‘À’=>’A’, ‘Á’=>’A’, ‘Â’=>’A’, ‘Ã’=>’A’, ‘Ä’=>’AE’, ‘Å’=>’A’, ‘Æ’=>’A’, ‘Ç’=>’C’, ‘È’=>’E’, ‘É’=>’E’, ‘Ê’=>’E’, ‘Ë’=>’E’, ‘Ì’=>’I’, ‘Í’=>’I’, ‘Î’=>’I’, ‘Ï’=>’I’, ‘Ñ’=>’N’, ‘Ò’=>’O’, ‘Ó’=>’O’, ‘Ô’=>’O’, ‘Õ’=>’O’, ‘Ö’=>’OE’, ‘Ø’=>’O’, ‘Ù’=>’U’, ‘Ú’=>’U’, ‘Û’=>’U’, ‘Ü’=>’UE’, ‘Ý’=>’Y’, ‘Þ’=>’B’, … Read more
To effectively remove special characters in a string, just use the preg_replace method. $string = preg_replace(‘/[^a-zA-Z0-9]/s’, ”, $string);
To make queries on WordPress, I’m used to using WP_Query($args). In this example, we want to add a LIKE = “%title%” in our query. Here is a simple request that adds all our posts in the array a_response_array: $args = array( ‘post_status’ => ‘publish’, ); // The Query $query = new WP_Query( $args ); // … Read more
To make all WordPress functions accessible in a PHP script, just include wp-load.php require_once(‘../wp-load.php’); to test, we can for example display the version of WordPress $blog_info = get_bloginfo(‘version’); print_r($blog_info);
Using the getElementsByTagName method to navigate and find the child in question. $number_orders = $image_1->getElementsByTagName(‘number_order’); foreach ($number_orders as $key => $value) { $value->nodeValue = “teaser”; }
To find out if the current user is an administrator in WordPress, i.e. if they have the right to set up options: if ( ! current_user_can( ‘manage_options’ ) ) { echo “You are not admin”; } else { echo “You are an admin”; }
For every WordPress image, we can add a caption or a title. It may be useful to add a counter. To do this, you must use both hooks admin_head-post.php and admin_head-post-new.php function cf_caption_count_js() { echo ‘<script type=”text/javascript”> jQuery(document).ready(function() { jQuery(“#attachment_caption”).wrap(“<div></div>”); jQuery(“#attachment_caption”).parent().css(“display”, “table”); jQuery(“#attachment_caption”).parent().css(“width”, “100%”); jQuery(“#attachment_caption”).after(“<span id=\’cf_caption_count\’ style=\’display:table-cell; width: 30px; margin-left: 5px; text-align: right;\’></span>”); jQuery(“#cf_caption_count”).html(jQuery(“#attachment_caption”).val().length); jQuery(“#attachment_caption”).keyup(function() … Read more