What is the precedence between && and "and"?

What's the output?

Is the PHP float type guaranteed to be 64 bit IEEE?

Knowing that the output of the first echo is '2.5', what will be the output of the third echo on Unix Machine? setlocale(LC_ALL, 'fr_FR'); echo (string)2.5; echo '\n'; echo (float)(string)2.5; ?>

What is empty () ?

Is sizeof() function returns the number of elements in an array?

(8 < 1 || 4 >= 4 ) will return

Which function is used to check type of array

The function used to iterate over array and object.

How can I identify the server IP address in PHP?

$x = 10.88; echo (int) $x;