PHP is_countable() Function

The PHP is_countable() function in PHP is used to  find whether a variable is countable or not. It returns a Boolean value true if the parameter var is countable else it returns false.

Syntax

is_countable ( mixed $var ) 

Parameter

var(required)- This parameter represents the value to check.

Return

This function returns a Boolean value TRUE if the parameter var is countable, else it returns FALSE.

Example 1

 

Output

var is countable. 

Example 2

 

Output

The var is countable

Example 3

 

Output

bool(true)
bool(true) 

Example 4

 

Output

 bool(true)
 bool(false) 

Related Topics

PHP rsort() Function

PHP rsort() Function The rsort () function in PHP is used to sort an array in reverse order i.e., highest to lowest. Syntax rsort ( array &$array [, int $sort_flags = SORT_REGULAR ] ) Parameter array(required)- This parameter represents the input array. sort_flags (optional)- This parameter is used to...

1 minute read.

PHP array_column() Function

PHP array_column() Function The array_column() function in PHP is used to return the values from a single column specified in the input array. Syntax array_column (array $input, mixed $column_key [, mixed $index_key]) Parameter input(required)- This parameter represents a multi-dimensional array or an array of...

1 minute read.

PHP arsort() function

PHP arsort() function The arsort() function in PHP sorts an array in the reverse order and maintains the index association Syntax arsort ( array &$array [, int $sort_flags = SORT_REGULAR ] ) Parameter array(required)- This parameter represents the input array. sort_flags (optional)- This parameter is used to modify the behavior...

2 minutes read.

PHP strchr() Function

PHP strchr() Function The strchr() function in PHP searches for the first occurrence of the specified string inside another string. It is a binary-safe case -sensitive function and is the alias of strstr() function. Syntax strstr ( string $haystack , mixed $needle [, bool $before_needle] ) Parameter haystack(required)-...

1 minute read.

PHP array_splice() Function

PHP array_splice() Function The array_splice() function in PHP is used to remove a portion of the array and replaces them with the elements of the replacement array. Syntax array_splice (array &$input, int $offset [, int $length = count($input) [, mixed $replacement = array() ]] ) Parameter input(required)- This array represents the...

2 minutes read.

PHP intval() Function

The intval() Function in PHP is used to get the integer value for the given variable. This function should not be used on objects. Else it will emit an E_NOTICE level error and return 1. Syntax intval...

1 minute read.

PHP crypt() Function

PHP crypt() Function The crypt () function in PHP returns a hashed string using DES, Blowfish, or MD5 algorithms. Some constants of crypt() function are as follows: [CRYPT_STD_DES][CRYPT_EXT_DES][CRYPT_MD5][CRYPT_BLOWFISH][CRYPT_SHA_256][CRYPT_SHA_512] etc. Syntax crypt ( string $str [, string $salt ] )  Parameter str(required)- This parameter represents the string to be hashed salt(optional)- This parameter...

2 minutes read.

PHP stristr() Function

PHP stristr() Function The stristr() function in PHP finds the first occurrence of a string and returns the matched substring. It is a case-insensitive function. Syntax stristr ( string $haystack , mixed $needle [, bool $before_needle ] ) Parameter haystack(required)- This parameter represents the input string. needle(required)- This parameter...

2 minutes read.

PHP str_getcsv() Function

PHP str_getcsv() Function The str_getcsv() function in PHP parses a CSV string into an array and returns an array containing the fields read. Syntax str_getcsv ( string $input [, string $delimiter [, string $enclosure [, string$escape ]]] ) Parameter input(required)- This parameter represents the string to parse. delimiter(optional)- This parameter signifies...

1 minute read.

PHP strlen() Function

PHP strlen() Function The strlen() function in PHP is used to return the length of the specified string. Syntax strlen ( string $string ) Parameter string(required)- This parameter represents the string which is measured for length. Return This function returns the length of the string on success or returns 0 if the specified...

1 minute read.

PHP Magic Constants

There are various predefine PHP Magic Constants. It starts with underscore(__) and ends with double underscore.  Magic Constant Description __LINE__ To check current line number of the file. __FILE__ To check full path and filename of...

1 minute read.

PHP Explode() Function

PHP Explode The PHP explode( ) is used to break a string into an array. The PHP explode( ) allow us to break a string into a smaller text with each break...

1 minute read.

PHP implode() Function

PHP implode() Function The implode() function in PHP joins the specified array elements with a string. Syntax implode ( string $glue, array $pieces ) Parameter glue(optional)- It specifies what to put between the array elements. pieces(required)- This parameter represents...

1 minute read.

Python Set pop() method

Python Set pop() method The set.pop() method in Python removes an arbitrary element (random item) from the set and returns the element removed. Syntax set.pop()  Parameter NA Return This method returns an arbitrary (random) element from the set. Example 1 #...

1 minute read.

PHP array_reduce() Function

PHP array_reduce() Function The array_reduce() function in PHP reduces the array to a single value using by applying a callback function to the elements of the array. Syntax array_reduce ( array $array , callable $callback [, mixed $initial = NULL ] ) Parameter array(required)- This parameter represents the input array. callback (required)- This...

1 minute read.

PHP vsprintf() Function

PHP vsprintf() Function The vsprintf() function in PHP returns a formatted string. This function accepts an array of arguments. Syntax vsprintf ( string $format , array $args ) Parameter format(required)- This parameter specifies the string and how to format the variables in it. The conversion specification of this parameter...

3 minutes read.

PHP array_fill_keys() Function

The array_fill_keys() function in PHP fills an array with the value of the specified value parameter, using the values of the specified keys array as keys. Syntax array_fill_keys ( array $keys , mixed $value ) Parameter keys(required)- This parameter signifies the input array of values that will be...

1 minute read.

PHP strcasecmp() Function

PHP strcasecmp() Function The strcasecmp() function in PHP compares two strings. It is a binary-safe case-insensitive string function. Syntax strcasecmp ( string $str1 , string $str2 ) Parameter str1(required)- This parameter represents the first string. str2(required)- This parameter represents the second string. Return This function returns a value less than( <...

1 minute read.

PHP range() Function

PHP range() Function The range () function in PHP is used to create an array containing a range of elements. Syntax range ( mixed $start , mixed $end [, number $step = 1 ] ) Parameter start(required)- This parameter represents the first value of the sequence. end(required)- This parameter represents the...

1 minute read.

PHP Data Types

PHP data type is used to hold the various types of data or value.  There are three types of data types in PHP. It is a loosely data typed language, so...

2 minutes read.