PHP indexed array is an array which is represented by an index number by default. All

You can append data into file by using a or a+ mode in fopen() function. Let's see

PHP enables you to download file easily using built-in readfile() function. The readfile() function reads a

PHP allows you to upload single and multiple files through few lines of code only. PHP

PHP mysql_query() function is used to execute select query with order by clause. Since PHP 5.5, mysql_query() function

The $var (single dollar) is a normal variable with the name var that stores any value like string,