$text
)
Checks if all of the characters in the provided string,
text
, are hexadecimal 'digits'.
Anonymous user / 3.145.64.210 Log In Register |
?
Wallet:
3.00
Daily Credits:
1.20 / 1.20
|
This is your credit balance. Even if you are an anonymous user, you are given some credits to spend. Every IP address has its own account and it is provided with free credits that can be used to pay for Online Domain Tools services. Moreover, credit balance is reset every day. This is why we call them Daily Credits. Registered users have higher Daily Credits amounts and can even increase them by purchasing subscriptions.
Besides Daily Credits, all accounts, including IP address accounts of anonymous users, have their credit Wallet. Wallet credits are not reset on a daily basis, but they are only spent when a user has not enough Daily Credits. Registered users can buy credits to their wallets. All IP address accounts are created with an initial Wallet balance of 3.00. Once IP address account spends credits from its Wallet, it can not be charged again. This should allow new users to try most of Online Domain Tools services without registration.
$text
)
Checks if all of the characters in the provided string,
text
, are hexadecimal 'digits'.
The tested string.
Returns TRUE
if every character in text
is
a hexadecimal 'digit', that is a decimal digit or a character from
[A-Fa-f] , FALSE
otherwise.
Example #1 A ctype_xdigit() example
<?php
$strings = array('AB10BC99', 'AR1012', 'ab12bc99');
foreach ($strings as $testcase) {
if (ctype_xdigit($testcase)) {
echo "The string $testcase consists of all hexadecimal digits.\n";
} else {
echo "The string $testcase does not consist of all hexadecimal digits.\n";
}
}
?>
The above example will output:
The string AB10BC99 consists of all hexadecimal digits. The string AR1012 does not consist of all hexadecimal digits. The string ab12bc99 consists of all hexadecimal digits.
Note:
If an integer between -128 and 255 inclusive is provided, it is interpreted as the ASCII value of a single character (negative values have 256 added in order to allow characters in the Extended ASCII range). Any other integer is interpreted as a string containing the decimal digits of the integer.