Laravel 5: Recover From Possible Exceptions With rescue

The rescue function can be used to attempt execution of an operation that has the potential to throw an exception. The rescue function will allow you to specify a default value, through the $rescue parameter that will be returned if the operation fails.

The rescue helper function will log invoke the report helper function on the inner exception if the operation fails.

#Signature

The signature of the rescue function is:

1function rescue(
2    callable $callback,
3    $rescue = null
4);

#Example Use

The following examples are equivalent:

1$value = rescue(function () {
2    throw new Exception('This will always fail');
3}, function () {
4   return 'Hello, Universe';
5});

Using try/catch Control Structure

1$value = '';
2 
3try {
4    throw new Exception('This will always fail');
5} catch (Exception $e) {
6    report($e);
7 
8    $value = 'Hello, Universe';
9}

After both code examples have executed, the value of $value would be Hello, Universe. In the first example, you will notice that we are able to supply a callback as the default value when calling rescue; this is because the default value is evaluated using the value helper function before it is returned.

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