getopt -> return PHP Notice: Undefined index:

Question

I'm using getopt to pass variables to my script, but I get the message:

PHP Notice: Undefined index:

Here's my code:

$MyOptions = getopt("c:hp:");
if ($MyOptions['c']) { //line wher error show up!
    $MyClub = $MyOptions['c'];
} else {
    $MyClub = '53';
}

What did I miss?

Answer 1

The problem is the index c in your $MyOptions array does not exist, you can avoid this in a number of ways, but my preferred option in this case would be to replace the entire if-else statement with;

$MyClub = $MyOptions['c'] ?? '53';

The ?? is the Null Coalescing operator.

The null coalescing operator (??) has been added as syntactic sugar for the common case of needing to use a ternary in conjunction with isset(). It returns its first operand if it exists and is not NULL; otherwise it returns its second operand.

Please be aware this is only available from PHP 7, otherwise you will have to use an isset() to check if the index exists.