PHP is string

Education is not limited to just classrooms. It can be gained anytime, anywhere... - Ravi Ranjan (M.Tech-NIT)

PHP : is_string() function

Description

The is_string () function is used to find whether a variable is a string or not.

Version

(PHP 4 and above)

Syntax

is_string (var_name)

Parameter

Name

Description

Required /
Optional

Type

var_name

The variable being checked

Required

Mixed*

*Mixed : Mixed indicates that a parameter may accept multiple (but not necessarily all) types.

Return value

TRUE if var_name is of type string is, FALSE otherwise.

Value Type : Boolean.

Example :

  1. if (is_string("2663"))  

  2. echo "It is a string ";  

  3. else  

  4. echo 'It is not a string';  

  5. var_dump(is_string('XYZ'));  

  6. var_dump(is_string("99"));  

  7. var_dump(is_string(123.05));  

  8. var_dump(is_string(false));  

  9. ?>  

Output :

It is a string bool(true) bool(true) bool(false) bool(false)