integer: Converting to integer

Converting to integer

To explicitly convert a value to integer, use either the (int) or (integer) casts.
In most cases the cast is not needed, since a value will be automatically converted if an operator, function or control structure requires an integer argument.
A value can also be converted to integer with the intval() function.
If a resource is converted to an integer, then the result will be the unique resource number assigned to the resource by PHP at runtime.
FALSE will yield 0 (zero), and TRUE will yield 1 (one).
When converting from float to integer, the number will be rounded towards zero.
NULL is always converted to zero (0).
The behaviour of converting to integer is undefined for other types. Do not rely on any observed behaviour, as it can change without notice.

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Converting to integer