$wpdb->get_results(…) with $wpdb->prepare(…) returns empty array despite correct query

This string, meta_value LIKE ‘%user-input-value%'”, contains percentage wilcards (%) that indicate that we’re looking for a row where meta_value column contains user-input-value as part of its value. $wpdb->prepare converts them into hashes, and the MySQL server gets something like this: meta_value LIKE ‘{399038939300d2c307c53b29a166ee90101da7b2aba7978a898694010bf1bfe6}user-input-value{399038939300d2c307c53b29a166ee90101da7b2aba7978a898694010bf1bfe6}’. Naturally, I was getting no results! The wpdb::prepare page reads, ‘Literal percentage … Read more

check that the data exists before sending it to wpdb

Hi the error you are getting for $serializedpaisol variable because it is not define in function scope. the variable you define in specific scope can not access out form its scope; eg. { //example scope $var=10; } echo $var; // you will get undefined error. how you can fixed it? Solution // first define variable … Read more

How do I query a table?

Codex has extensive wpdb reference on how to perform different kinds of requests to database. However in most cases it is best to try to access data with available WP or theme/plugin code first.

Query and get meta as object(stdClass) on wp postmeta table?

I was wondering the same myself recently and this is the best solution I’ve come up with. First, declare a really simple class in your functions.php class Object { var $data = array(); public function __set($name, $value) { $this->data[$name] = $value; } public function __get($name) { return $this->data[$name]; } } This is the generic object … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)