PHP | is_array() Function

The is_array() is an inbuilt function in PHP. The is_array() function is used to check whether a variable is an array or not.

Syntax:

bool is_array($variable_name)

Parameter: This function accept a single parameter as mentioned above and described below:
$variable_name: This parameter holds the variable we want to check.



Return value: It is a boolean function so returns TRUE when $variable_name is a boolean value, otherwise FALSE.

Below example illustrate the is_array() function in PHP.
Example 1:

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<?php
// PHP code to demonstrate working of is_array()
$variable_name1=67.099;
$variable_name2=32;
$variable_name3="abc";
$variable_name4=array('A', 'B', 'C');
  
// $variable_name4 is an array, returns TRUE
if (is_array($variable_name4))
    echo "array('A', 'B', 'C') is an array . \n";
else
    echo "array('A', 'B', 'C') is not a array value. \n";
  
  
// $variable_name1 is not array, gives FALSE
if (is_array($variable_name1))
    echo "$variable_name1 is a array value. \n";
else
    echo "$variable_name1 is not a array value. \n";
  
// $variable_name2 is not array, gives FALSE
if (is_array($variable_name2))
    echo "$variable_name2 is a array value. \n";
else
    echo "$variable_name2 is not a array value. \n";
  
// $variable_name3 is not array, gives FALSE
if (is_array($variable_name3))
    echo "$variable_name3 is a array value. \n";
else
    echo "$variable_name3 is not a array value. \n";
?>

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Output:

array('A', 'B', 'C') is an array . 
67.099 is not a array value. 
32 is not a array value. 
abc is not a array value.

Reference: http://php.net/manual/en/function.is-array.php



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