The IntlChar::isdigit() function is an inbuilt function in PHP which is used to determine the given input code data is a digited character or not. It returns true when the character is under the general category decimal digit numbers. Beginning with Unicode 4, this is the same as testing for the Numeric_Type of Decimal.
Syntax:
bool IntlChar::isdigit ( $codepoint )
Parameters: This function accepts a single parameter as mentioned above and described below:
- $codepoint : The input parameter $input_codepoint is an integer or character, which is encoded as a UTF-8 string.
Return Value: If $codepoint data is digit character then return True otherwise return False.
Examples:
Input : $codepoint = "X" Output : bool(false) Input : $codepoint = "7" Output : bool(true)
Below programs illustrate the IntlChar::isdigit() function in PHP:
Program 1:
php
<?php// PHP code to illustrate the // IntlChar::isdigit() function.// single digitvar_dump(IntlChar::isdigit("5"));// number casesvar_dump(IntlChar::isdigit("5555"));// float numbervar_dump(IntlChar::isdigit("15.08"));// big numbervar_dump(IntlChar::isdigit("12e"));?> |
Output:
bool(true) NULL NULL NULL
Program 2:
php
<?php// PHP code to illustrate the // IntlChar::isdigit() function.// alphabet cases var_dump(IntlChar::isdigit("G"));// in space casesvar_dump(IntlChar::isdigit(" "));// new line casesvar_dump(IntlChar::isdigit("\n"));// string casesvar_dump(IntlChar::isdigit("Geeks "));// symbol casesvar_dump(IntlChar::isdigit("@"));?> |
Output:
bool(false) bool(false) bool(false) NULL bool(false)
Program 3:
php
<?php// PHP code to illustrate the// IntlChar::isdigit() function.var_dump(IntlChar::isdigit("0"));var_dump(IntlChar::isdigit(' '));?> |
Output:
bool(true) bool(false)
References: http://php.net/manual/en/intlchar.isdigit.php
