I've tested all ways 10 millions times and get the following results: For example, if we are taking some integer input from user then we should type cast.
There are various ways in which this could be achieved. The decision is taken by PHP. Looks like type-casting user-defined objects is a real pain, and ya gotta be nuttin' less than a brain jus ta cypher-it. A year after originally asking this question, guess who found himself using typecasting in a practical environment?
The behaviour of an automatic conversion to array is currently undefined. Suddenly the reason for user defined type casting exists!
You can use it to use an variable and unset it on the same line: All variables that equal name in both classes will be copied. More details in the PHP forms chapter.
As for Boolean evaluation, PHP docs clearly state what is considered to be false when evaluating to boolean and both empty string and a string "0" are considered false. I just think it goes against what every developer is used to, and is much, much less convenient.
I was arguing over on SO with someone using this technique to sanitize user input. That means, variables don't have a type, values do. PHP does not require or support type definition of the variable.
The normal behavior where PHP does the casting for you would of course not throw an exception. Note that in order to ensure that the value of the entire expression is cast to an integer, the expression is placed within parentheses. A 'type casting' is an expression that produces a new value of a different type of the original; it doesn't do anything to the variable if one is involved.
Desired data type name with parenthesis before the variable which we need to cast. The meaning of "Casting" is taking a variable of one particular data type and converting it to another data type.
For instance, we can convert a float to an integer like following. Ryan Ryan 67 1. The requirement was to display money values on a website for a restaurant menu.
PHP, as most of us know, has weak typing.