The ctype_xdigit() function in PHP used to check each and every character of string/text are hexadecimal digit or not. It return TRUE if all characters are hexadecimal otherwise return FALSE .
Syntax :
ctype_xdigit(string text)
Parameters Used:
- text : It is mandatory parameter which specifies the tested string.
Return Values:
It returns TRUE if all characters of the string are hexadecimal otherwise return FALSE.
Examples:
Input : ABCDEF0123 Output : Yes Input : GFG2018 Output : No
Note : It checking decimal digit or a character from [A-F, a-f].
Below programs illustrate the ctype_xdigit() function.
Program: 1
<?php // PHP program to check given string is // Hexadecimal character or not $string = 'ABab012'; // Checking above string by using // of ctype_xdigit() function. if ( ctype_xdigit($string)) { // if true then return Yes echo "Yes
"; } else { // if False then return No echo "No
"; } ?> |
Output:
Yes
Program: 2
Take one more example ctype_xdigit() function to check how it work when input contains uppercase lowercase and symbol character by using input as array of string.
<?php // PHP program to check given string is //Hexadecimal character or not $strings = array( 'ABCDEF', 'abcdef', '0123456789X', '0123456789', 'GFG'); // Checking above given strings //by used of ctype_xdigit() function . foreach ($strings as $test) { if (ctype_xdigit($test)) { echo "Yes
"; } else { echo "No
"; } } ?> |
Output:
Yes Yes No Yes No No
References : http://php.net/manual/en/function.ctype-xdigit.php
leave a comment
0 Comments