ctype_xdigit

(PHP 4 >= 4.0.4, PHP 5, PHP 7)

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说锟斤拷

ctype_xdigit ( string $text ) : bool

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锟斤拷锟斤拷

text

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锟斤拷锟斤拷值

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锟斤拷锟斤拷

Example #1 一锟斤拷 ctype_xdigit() 锟斤拷锟斤拷锟斤拷

<?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";
    }
}
?>

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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.

注锟斤拷

Note:

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