PHP注意：什么是亲[重复]

Question

This question already has an answer here:

• “Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP 28 answers

I've been getting this error. Any fix??

PHP Notice: Undefined offset: 1 in line 402

if ($argv[1] == '--cover')
{
    $Modules = new Modules;
    $Modules->cover();
    die();
}

The line is if ($argv[1] == '--cover')

</div>

Answer 1

This error means that the $argv[1] is undefined or null. Make sure this variable is properly assign or have a value before making a condition.

using print_r($argv); before making a condition will help you if the variable have a value or not.