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vi:Tham Khảo Các Hàm/update option

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Description

Use the function update_option to update a named option/value pair to the options database table. The option_name value is escaped with $wpdb->escape before the INSERT statement.

Proper use of this function suggests using get_option to retrieve the option and if tested for true, then use update_option. If get_option returns false, then add_option should be used instead.

Note that update_option cannot be used to change whether an option is to be loaded (or not loaded) by wp_load_alloptions. In that case, a delete_option should be followed by use of the update_option function.

Usage

<?php update_option('option_name''newvalue'); ?>

Example

Update the option name myhack_extraction_length with the value 255. If the option does not exist then use add_option and set autoload to no.

<?php
$option_name 
'myhack_extraction_length' 
$newvalue '255' ;
  if ( 
get_option($option_name) ) {
    
update_option($option_name$newvalue);
  } else {
    
$deprecated=' ';
    
$autoload='no';
    
add_option($option_name$newvalue$deprecated$autoload);
  }
?>

Parameters

option_name
(string) (required) Name of the option to update. A list of valid default options to update can be found at the Option Reference.
Default: None
newvalue
(string) (required) The NEW value for this option name. This value can be a string, an array, an object or a serialized value.
Default: None
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