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PHP - 确保字符串没有空格

php
2022-08-30 15:48:53

如何检查PHP字符串是否包含任何空格？我想检查那里是否有空格，然后回显错误消息（如果为真）

if(strlen($username) == whitespace ){

                echo "<center>Your username must not contain any whitespace</center>";

答案 1
if ( preg_match('/\s/',$username) ) ....

答案 2

试试这个：

if (count(explode(' ', $username)) > 1) {
  // some white spaces are there.
}

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