Function and usage of is_success() in wordpress

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    2024-01-08T23:49:47+00:00

    The is_success() function in WordPress is a utility function used to check the success of a specific operation. It's particularly useful in scenarios where you're dealing with operations that may have varying outcomes, like database queries, HTTP requests, or any process where success is not guaranteed.

    Function Definition:

    is_success( $sc )
    

    Parameters:

    • $sc (mixed): This parameter represents the status code or result that you want to check for success. This could be an HTTP status code, a Boolean value, or any other relevant status indicator depending on the context in which you're using the function.

    Return Value:

    The is_success() function returns a Boolean value:

    • true: Indicates that the operation was successful.
    • false: Indicates that the operation was not successful.

    Usage:

    1. Checking the Success of a Database Query: Suppose you have executed a database query and you want to check if it was successful.

      $result = $wpdb->query( $your_query );
      if ( is_success( $result ) ) {
          // The query was successful
      } else {
          // The query failed
      }
      
    2. Validating an HTTP Request: If you've made an HTTP request, you can use is_success() to check if the response was successful (usually a 200 status code).

      $response = wp_remote_get( 'https://example.com' );
      $status_code = wp_remote_retrieve_response_code( $response );
      
      if ( is_success( $status_code ) ) {
          // The request was successful
      } else {
          // The request failed
      }
      
    3. General Purpose Success Check: You can use it in various other contexts where you have a Boolean value or a status code that signifies success.

      $operation_success = some_function();
      
      if ( is_success( $operation_success ) ) {
          // Operation was successful
      } else {
          // Operation failed
      }
      

    Notes:

    • The actual implementation of is_success() may vary based on your WordPress setup or the specific context in which you're using it.
    • It's a good practice to always check for the success of operations that can have variable outcomes to ensure robust error handling in your application.

    Remember, this is a general explanation, and the specific usage may vary based on the context and the WordPress environment you are working with.

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