PHP judgment Variable Type common method _php tutorial

Now let's take a look at the specific ways to use

GetType ()
GetType returns the following values based on the parameter type
"Boolean" (from PHP 4)
"Integer"
"Double" (If float returns "Double" instead of "float")
"String"
"Array"
"Object"
"Resource" (from PHP 4)
"NULL" (from PHP 4)
"Unknown type"

For example:
GetType (' 1 '); Returns a string
and GetType (1); Returns an integer


Is_array ()
Is_array () is relatively simple to use
False if the argument is an array that returns true otherwise

The usage and return values of several other functions are similar to Is_array ()
It is important to note that is_numeric () is used to determine whether a variable is a number or a string.
Returns true if the argument of Is_numeric () is a numeric or numeric string, or False

http://www.bkjia.com/PHPjc/325319.html www.bkjia.com true http://www.bkjia.com/PHPjc/325319.html techarticle Now let us know how to use GetType () GetType returns the following value "Boolean" (from PHP 4) "integer" "Double" (if float) based on the parameter type ...

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