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PHP | is_countable() Function

Last Updated : 21 Apr, 2020
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The is_countable() function is an inbuilt function in PHP which is used to check whether the content of the variable is countable or not. Syntax:
bool is_countable ( mixed $var )
Parameters: This function accepts one parameter as mentioned above and described below:
  • $var: This parameter holds the value which need to be checked.
Return Value: This function returns a boolean value i.e. either True if value of variable is countable otherwise returns False. Below programs illustrate the is_countable() function in PHP: Program 1: php
<?php

// Declare a string
$str = "GeeksforGeeks"; 

var_dump(is_countable($str));

$arr = array(1, 3, 5, 7);

var_dump(is_countable($arr));
?> 
Output:
bool(false) 
bool(true) 
Program 2: php
<?php

// Declare a number
$num = 1234;
var_dump(is_countable($num));

// Declare an array
$arr = array('Welcome', 'to', 'GeeksforGeeks');
var_dump(is_countable($arr));

// Declare a string
$str = "GeeksforGeeks"; 
var_dump(is_countable($str));

// Declare an empty class
class GFG {
    // Empty class
}

// Create an object of class
$obj = new GFG();
var_dump(is_countable($obj));

// Create an array iterator object
$itr = new ArrayIterator();
var_dump(is_countable($itr));
?> 
Output:
bool(false) 
bool(true) 
bool(false) 
bool(false) 
bool(true)
Reference: https://www.php.net/manual/en/function.is-countable.php

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