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Route ('/', function () {
    echo ' Hello world! ';
});
What does that mean? Never seen this syntax format

share to: more

------Solution--------------------
Closures, php5.3 start support

Route ('/', function () {
    echo ' Hello world! ';
});

In the route is a custom function, he needs to pass in two parameters, and the second parameter is a callback function

For PHP < 5.3, you can write

Route ('/', create_function (', ' "Echo ' Hello world! ';"));

They can all be considered

function func () {
    echo ' Hello world! ';
}
Route ('/', ' func ');

The Shorthand form

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