How to count the number of parameters passed in a PHP function?

With the help of func_num_args() function, we can count the number of parameters passed into a PHP function.

Example of function func_num_args()

<?php
function count_param()
{
    $count_args = func_num_args();
    echo "Number of parameters: $count_args\n";
}
 
count_param(10, 20);  // Output: Number of parameters: 2
 
?>

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