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To find out how to load a file in PHP from a form, you have to start by formatting the form correctly. It is mandatory to use the post method as well as the multipart/form-data enctype, otherwise PHP will not receive the necessary data. <form action=”/” method=”post” enctype=”multipart/form-data”> <input type=”file” name=”namefile” /> <input type=”submit” value=”ok” … Read more
It can happen that a function is only callable from one interface (console, apache…). There is a function that returns exactly what we are looking for. In the following example, we are looking to know whether the call is from the console. if (php_sapi_name() != “cli”) { header(“Location: http://www.sadtrombone.com/”); die(); }
By default on WordPress we have TinyMCE and although this plugin is very powerful, there are far too many buttons. Fortunately with a few lines of code, it is possible to configure it. In your theme’s functions.php file or in your plugin, use the hook as follows: function configure_mce( $init ) { // nos options … Read more
With WordPress, it is common to use the get_post_meta($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
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