(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
ctype_punct — 检测可打印的字符是不是不包含空白、数字和字母
如果 text
中每个字符都是可打印,但不是字母、数字,也不是空白,那么就返回
true
;反之则返回 false
。当使用空字符串调用时,结果始终为 false
。
示例 #1 ctype_punct() 示例
<?php
$strings = array('ABasdk!@!$#', '!@ # $', '*&$()');
foreach ($strings as $testcase) {
if (ctype_punct($testcase)) {
echo "The string $testcase consists of all punctuation.\n";
} else {
echo "The string $testcase does not consist of all punctuation.\n";
}
}
?>
以上示例会输出:
The string ABasdk!@!$# does not consist of all punctuation. The string !@ # $ does not consist of all punctuation. The string *&$() consists of all punctuation.