Il n'y a pas de questions bêtes
Jean-Pierre Lambelet
With WordPress, it is common to use the get_post_meta($post, $meta_key) method in order to retrieve the value of a given meta. However for the ID, there is no ready-made method. The best solution I’ve found so far: $mid = $wpdb->get_var( $wpdb->prepare(“SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = %s”, $post, $meta_key) );
If you want to use a regular expression to, for example, search for a word in a paragraph, it is important to protect your variable. To do this, just use the following function: string preg_quote ( string $str [, string $delimiter = NULL ] ) For example: foreach ($aRequest[‘keywords’] as $sKeyword) { $sKeyword = preg_quote($sKeyword); … Read more
It may happen that when you save your post, you want it to be considered not only in the chosen category but also in its parent category. For example, you have the following categories: – Auto – – BMW – – Audi By selecting Audi you also automatically want to have the Auto category. To … Read more
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); </script> This … 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. <script></script> (document).ready (function) count ($("#text"),$("#count") $("#text"). count ($("#text"),$("#count") }); }); function count (src,dest) var txtVal … Read more
A lot of code uses strlen to get the size of a string. The problem: strlen returns the number of bytes, not the number of characters. As soon as a string contains accented letters or emojis, the result is wrong. The problem with strlen In UTF-8, a character such as “é” takes two bytes, so … Read more
A small function to replace accented characters with their unaccented equivalent. function normalize_str($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);