The **`is_string` method** can be used to check if the type of the variable is `string` or not. 


#   
#  Syntax

```
is_string(mixed $value): bool
```

This method returns `true` if the passed value is an `string`. Otherwise, it returns `false`.
 
##  
## Code

<?php 

  $test = 'str';
  printIsString($test);

  $test = '';
  printIsString($test);

  $test = true;
  printIsString($test);

  $test = 10;
  printIsString($test);

  function printIsString($test){
    echo "The Value is: ";
    var_dump($test);

    echo "Is String: ";
    var_dump(is_string($test));
    
    echo "---------\n\n";
  }

?>

#   
## Explanation

In the above code: 

* We used the `is_string` method to check if a variable is a string or not.

* For the value `str` and `""`, the `is_string` method returns `true`. 

* But for the value `true(boolean)` and `10(int)`, the `is_string` method returns `false` because it is not a string type variable.

What is the is_string method in PHP?

The is_string method checks if a variable is a string, returning true for strings and false otherwise.