ctype_alnum

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

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说锟斤拷

ctype_alnum ( 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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Example #1 A ctype_alnum() 示锟斤拷 (使锟斤拷默锟较碉拷锟斤拷锟斤拷锟斤拷锟斤拷)

<?php
$strings = array('AbCd1zyZ9', 'foo!#$bar');
foreach ($strings as $testcase) {
    if (ctype_alnum($testcase)) {
        echo "The string $testcase consists of all letters or digits.\n";
    } else {
        echo "The string $testcase does not consist of all letters or digits.\n";
    }
}
?>

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The string AbCd1zyZ9 consists of all letters or digits.
The string foo!#$bar does not consist of all letters or digits.

注锟斤拷

Note:

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