isget() for PHP
, (*1)
This is a handy little helper function that is used to replace the common pattern of isset($a, $a['b']) ? $a['b'] : $c; which can be ugly and redundant., (*2)
You can think of it as a long lost brother of isset()., (*3)
It does two things:
* It silences down the PHP Undefined index notice, when trying to access an inexistent key in an array
* And returns a default value if the key is not set, (*4)
Usage
``` php
mixed isget(array $inputarray['somekey'], mixed $default_value), (*5)
If the `somekey` key is set, the function will return its value, if it's not, it will return the provided default value (or `false` by default);
It comes in really handy, if your function supports an array of options, and you don't want to worry about checking if the option has been set or not.
i.e.
``` php
function do_something($required_param, $options = array()) {
if (isget($options['forceint']) === true) {
$required_param = intval($required_param);
}
if (isget($options['uppercase']) === true) {
$required_param = strtoupper($required_param);
}
...
return $required_param;
}
$a = 12.34;
echo do_something($a);
// 12.34
echo do_something($a, array('forceint' => true));
// 12
If you need to go deeper, you can.
``` php
$dream = array();
echo isget($dream['within_a_dream']['within_a_dream']['within_a_dream']['...'], 'inception!');
// inception!, (*6)
## Installation
The easiest way to install this library is to use Composer and add the following
to your project's `composer.json` file:
``` javascript
{
"require": {
"artbit/isget": "dev-master"
}
}
Then, when you run composer install, everything will fall magically into place,
and the isget() function will be available to your project, as long as
you are including Composer's autoloader., (*7)
However, you do not need Composer to use this library., (*8)
This library has no dependencies and should work on older versions of PHP.
Download the code and include src/isget.php in your project, and all
should work fine., (*9)
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