PHP is a funny language, this lightning talk shows some of the funnyness.

1. PHP WTH
A short tour of pain & fire.

2. list()
list($a, $a) = array(1, 2, 3, 4);
echo $a;
// 1
// WTH

3. in_array()
$a = array('7.1');
$exists = in_array('7.10', $a);
var_dump($exists);
// true
// WTH

4. Private ORLY
class Human {
private $name;
function __construct($name) {
$this->name = $name;
}
public function touch($human) {
echo “Touched $human->name”;
}
}
$sally = new Human(‘sally’);
$joe = new Human(‘joe’);
$sally->touch($joe);
// Touched joe

5. ==
$a = 0;
$b = 'x';
false == $a;
// true
$a == $b;
// true
$b == true;
// true
// FFFFFFUUUUUU

6. Post increment
$a = 4;
echo $a+++$a++;
// 9
// WAT

7. Floats
$a = 0.1 * 0.1;
var_dump($a);
// double(0.01)
var_dump($a == 0.01);
// false
// ARRRRRGGGG

8. Ternaries
echo (true ?
'Foo' :
false ? 'Bar' : ‘Baz'
);
// Bar
// NOOOOOO

9. Be Careful