PHP | IntlChar isgraph() Function
Last Updated :
11 Jul, 2025
The
IntlChar::isgraph() function is an inbuilt function in PHP which is used to check the code point is a graphic character or not. It returns True for all characters except those with general categories Cc(control codes), Cf(format controls), Cs(surrogates), Cn(unassigned), and Z(separators).
Syntax:
bool IntlChar::isgraph ( $codepoint )
Parameters: This function accepts a single parameter
$codepoint which is mandatory. The
$codepoint value is an integer values or character, which is encoded as a UTF-8 string.
Return Value: This function returns True if
$codepoint is a graphic character, False otherwise.
Below programs illustrate the
IntlChar::isgraph() function in PHP:
Program 1:
php
<?php
// PHP code to illustrate the
// IntlChar::isgraph() function.
// Alphabet cases
var_dump(IntlChar::isgraph("c"));
// Single digit
var_dump(IntlChar::isgraph("4"));
// UTF encoded string
var_dump(IntlChar::isgraph("\u{2403}"));
// new line character
var_dump(IntlChar::isgraph("\n"));
// vertical tab character
var_dump(IntlChar::isgraph("\t"));
?>
Output:
bool(true)
bool(true)
bool(true)
bool(false)
bool(false)
Program 2:
php
<?php
// PHP code to illustrate IntlChar isgraph()
// Declare an array $arr
$arr = array("Z", "291", "^", " ", "*", "Sudo Placement");
// Loop run for every array element
foreach ($arr as $val){
// Check each element as code point data
var_dump(IntlChar::isgraph($val));
}
?>
Output:
bool(true)
NULL
bool(true)
NULL
bool(true)
NULL
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Reference: https://www.php.net/manual/en/intlchar.isgraph.php