PHP | IntlChar::isprint() Function

The IntlChar::isprint() function is an inbuilt function in PHP which is used to check whether the given input character is a printable character or not.

Syntax:

bool IntlChar::isprint( $codepoint )

Parameters: This function accepts a single parameter $codepoint which is mandatory. The input parameter is an integer values or character, which is encoded as a UTF-8 string.

Return Value: If $codepoint is a printable character then it returns True, otherwise return False.

Below programs illustrate the IntlChar::isprint() function in PHP:

Program 1:

PHP

<?php
// PHP code to illustrate IntlChar::isprint()
// function

// Input data is character type
var_dump(IntlChar::isprint("G"));

// Input data is special character
var_dump(IntlChar::isprint("@"));

// Input data is control character
var_dump(IntlChar::isprint("\t"));

// Input data is string type
var_dump(IntlChar::isprint("Geeksforgeeks"));

// Input data is number
var_dump(IntlChar::isprint("2018"));

// Input data is single digit
var_dump(IntlChar::isprint("5"));

?>

Output:

bool(true) 
bool(true) 
bool(false) 
NULL 
NULL 
bool(true) 

Note: If String and Numbers are used as a parameter then it returns NULL.

Program 2:

PHP

<?php
// PHP code to illustrate IntlChar::isprint()

// Declare an array $arr
$arr = array("G", "GeeksforGeeks", "^", "1001", "6",
                                "\n", "\n\n", "\t");

// Loop run for every array element
foreach ($arr as $val){

    // Check each element as code point data
    var_dump(IntlChar::isprint($val));
}
?>

Output:

bool(true) 
NULL 
bool(true) 
NULL 
bool(true) 
bool(false) 
NULL 
bool(false) 

Reference: http://php.net/manual/en/intlchar.isprint.php