PHP | is_string() Function (original) (raw)
Last Updated : 27 Apr, 2020
The is_string() function is an inbuilt function in PHP which is used to check whether the given value is a string or not.Syntax:
bool is_string( mixed $var )
Parameters: This function accepts one parameter as mentioned above and described below:
- $var: It contains the value that need to check.
Return Value: It returns TRUE if the value of variable is of string type and FALSE otherwise. Program 1:
php `
`
Output:
String Not String Not String String Not String String
Program 2:
php `
"Welcome", "b" => 2, "c" => "GeeksforGeeks" ); var_dump(is_string($arr["a"])); var_dump(is_string($arr["b"])); var_dump(is_string($arr["c"])); ?>`
Output:
bool(false) bool(true) bool(false) bool(true)
Reference: https://www.php.net/manual/en/function.is-string.php