PHP 替换和小写
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/8741918/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
PHP Replace and Lowercase
提问by TheBlackBenzKid
I am trying to do a PHP replace like ASP Replace. The function just returns a blank value though?
我正在尝试进行像 ASP 替换这样的 PHP 替换。该函数只是返回一个空值？
$zonename=mysql_real_escape_string($_POST["zonename"]);
$zname_clean =""; # blank string
$zname_clean = $zonename; # fill string with the post form
$zname_clean = str_replace($zname_clean, " ", ""); # remove white space
That is my code. Example Zonename would be "Header Left", I want to remove capitalization and also remove whitespace.
那是我的代码。示例 Zonename 将是“Header Left”，我想删除大写并删除空格。
How can I remove whitespace and convert the case and also is there a cleaner way of doing this?
如何删除空格并转换大小写，还有更简洁的方法吗？
回答by Treffynnon
// strip out all whitespace
$zname_clean = preg_replace('/\s*/', '', $zname_clean);
// convert the string to all lowercase
$zname_clean = strtolower($zname_clean);
See the PHP manual for strtolower()and preg_replace().
请参阅PHP手册strtolower()和preg_replace()。
回答by OptimusCrime
You have your parameters in the wrong order. Take a look at this: http://php.net/manual/en/function.str-replace.php
您的参数顺序错误。看看这个：http: //php.net/manual/en/function.str-replace.php
It should be str_replace(" ", "", $zname_clean);
它应该是 str_replace(" ", "", $zname_clean);
Another way of doing this is strtolower(trim($zname_clean));
另一种方法是 strtolower(trim($zname_clean));
回答by Prasad Rajapaksha
Try this .
尝试这个 。
$zonename=mysql_real_escape_string($_POST["zonename"]);
$zname_clean = strtolower(str_replace(" ", "",$zonename));
