PHP is_string() function

In this chapter you will learn:

1. Description for PHP is_string() function
2. Syntax for PHP is_string() function
3. Parameter for PHP is_string() function
4. Return value for PHP is_string() function
5. Example - Is it a string

Description

is_string(value) returns true if value is a string.

Syntax

PHP is_string() function has the following syntax.

Parameter

• value is the variable being type checked.

Return

PHP is_string() function returns true if value is a string.

Example

Is it a string.

<?php/* ja v  a2s  .  c o m*/
$values = array(2, "2", 2.5, "2.5", null, true);
foreach ($values as $value) {
    echo "is_string(";
    var_export($value);
    echo ") = ";
    var_dump(is_string($value));
}
?>

The code above generates the following result.

Next chapter...

What you will learn in the next chapter:

1. What is PHP isset() function
2. Syntax for PHP isset() function
3. Parameter for PHP isset() function
4. Return value for PHP isset() function
5. Example - Is the variable check

PHP boolval() function

PHP floatval() function

PHP gettype() function

PHP intval() function

PHP is_array(value) function

PHP is_bool() function

PHP is_float() function

PHP is_int() function

PHP is_null() function

PHP is_numeric() function

PHP is_object() function

PHP is_resource() function

PHP is_string() function

PHP isset() function

PHP settype() function

PHP strval() function