What problems does MYSQL_ASSOC encounter during operations?

This article mainly introduces the following content in the source code of MYSQL_ASSOC. I don't know what it is? So what is MYSQL_ASSOC? What are their main functions?

As follows:

 
 


  
  
Function fetch_array ($ input, $ type = MYSQL_ASSOC)

  
  
{

  
  
$ Output = @ mysql_fetch_array ($ input, $ type );

  
  
Return $ output;

  
  
}

 
 

What is MYSQL_ASSOC? What is the function?

The second optional parameter result_type in mysql_fetch_array () is a constant and can accept the following values: MYSQL_ASSOC, MYSQL_NUM, and MYSQL_BOTH. This feature is newly added in PHP 3.0.7. The default value of this parameter is MYSQL_BOTH.

If MYSQL_BOTH is used, an array containing both join and numeric indexes is obtained. Using MYSQL_ASSOC to get only the associated index is like mysql_fetch_assoc (), and using MYSQL_NUM to get only the numeric index as mysql_fetch_row ).

The above content is an introduction to MYSQL_ASSOC. I hope you will get something better.