php 从php字符串中删除奇怪的字符

removing strange characters from php string

提问by mrpatg

this is what i have right now

这就是我现在所拥有的

Drawing an RSS feed into the php, the raw xml from the rss feed reads:

将 RSS 提要绘制到 php 中，来自 RSS 提要的原始 xml 内容如下：

Paul’s Confidence

The php that i have so far is this.

到目前为止，我拥有的 php 是这样的。

$newtitle = $item->title;
$newtitle = utf8_decode($newtitle);

The above returns;

以上返回；

Paul?s Confidence

If i remove the utf_decode, i get this

如果我删除 utf_decode，我会得到这个

Paula?s Confidence

When i try a str_replace;

当我尝试 str_replace 时；

$newtitle = str_replace("”", "", $newtitle);

It doesnt work, i get;

它不起作用，我明白了；

Paula?s Confidence

Any thoughts?

有什么想法吗？

采纳答案by czuk

Try this:

尝试这个：

$newtitle = html_entity_decode($newtitle, ENT_QUOTES, "UTF-8")

If this is not the solution browse this page http://us2.php.net/manual/en/function.html-entity-decode.php

如果这不是解决方案，请浏览此页面http://us2.php.net/manual/en/function.html-entity-decode.php

回答by David D

This is my function that always works, regardless of encoding:

无论编码如何，这是我始终有效的功能：

function RemoveBS($Str) {  
  $StrArr = str_split($Str); $NewStr = '';
  foreach ($StrArr as $Char) {    
    $CharNo = ord($Char);
    if ($CharNo == 163) { $NewStr .= $Char; continue; } // keep ￡ 
    if ($CharNo > 31 && $CharNo < 127) {
      $NewStr .= $Char;    
    }
  }  
  return $NewStr;
}

How it works:

这个怎么运作：

echo RemoveBS('Hello ?how? ?are you??'); // Hello how are you?

回答by Keval Rathi

This will remove all non-ascii characters / special characters from a string.

这将从字符串中删除所有非 ascii 字符/特殊字符。

//Remove from a single line string
$output = "Likening a?not-criticala? with";
$output = preg_replace('/[^(\x20-\x7F)]*/','', $output);
echo $output;
 
//Remove from a multi-line string
$output = "Likening a?not-criticala? with \n Likening a?not-criticala? with \r Likening a?not-criticala? with. ' ! -.";
$output = preg_replace('/[^(\x20-\x7F)\x0A\x0D]*/','', $output);
echo $output;

回答by mrpatg

I solved the problem. Seems to be a short fix rather than the larger issue, but it works.

我解决了这个问题。似乎是一个简短的修复而不是更大的问题，但它有效。

$newtitle = str_replace('a?', "'", $newtitle);

I also found this useful snippit that may help others with same problem;

我还发现了这个有用的片段，可以帮助其他有同样问题的人；

<?
$find[] = 'a?'; // left side double smart quote
$find[] = 'a'; // right side double smart quote
$find[] = 'a?'; // left side single smart quote
$find[] = 'a?'; // right side single smart quote
$find[] = 'a|'; // elipsis
$find[] = 'a”'; // em dash
$find[] = 'a“'; // en dash

$replace[] = '"';
$replace[] = '"';
$replace[] = "'";
$replace[] = "'";
$replace[] = "...";
$replace[] = "-";
$replace[] = "-";

$text = str_replace($find, $replace, $text);
?>

Thanks everyone for your time and consideration.

感谢大家的时间和考虑。

回答by FuzzyBits

Yeah this is not working for me. What is the workaround for this? – vaichidrewar Mar 12 at 22:29

是的，这对我不起作用。解决方法是什么？– vaichidrewar 3 月 12 日 22:29

Add this to the HTML head (or modify if already there):

将此添加到 HTML 头部（或修改，如果已经存在）：

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

This will encode the funny charslike "a?" into UTF-8 so that the str_replace()function will interpret them properly.

这将编码有趣的字符，如“a？” 转换为 UTF-8，以便str_replace()函数正确解释它们。

Or you can do this:

或者你可以这样做：

ini_set('default_charset', 'utf-8');

回答by kalaithendral

Use the below PHP code to remove

使用以下 PHP 代码删除

html_entity_decode(mb_convert_encoding(stripslashes($name), "HTML-ENTITIES", 'UTF-8'))

回答by codemonkey

Is the character encoding setting for your PHP server something other than UTF-8? If so, is there a reason or could it be changed to UTF-8? Though we don't store data in UTF-8 in our database, I've found that setting the webserver's character set to UTF-8 seems to help resolve character set issues.

您的 PHP 服务器的字符编码设置是否不是 UTF-8？如果是这样，是否有原因或可以将其更改为 UTF-8？尽管我们的数据库中没有以 UTF-8 格式存储数据，但我发现将网络服务器的字符集设置为 UTF-8 似乎有助于解决字符集问题。

I'd be interested in hearing others' opinions about this... whether I'm setting myself up for problems by setting webserver to UTF-8 while storing submitted data in Latin1 in our mysql database. I know there was a reason I chose Latin1 for the database but can't recall what it was. Interestingly, our current setup seems to allow for non-UTF-8 character entry and subsequent rendering... it seems that storing in Latin1 doesn't prevent subsequent decoding and display of all UTF-8 characters?

我很想听听其他人对此的看法……我是否通过将网络服务器设置为 UTF-8 来设置自己的问题，同时将提交的数据存储在我们的 mysql 数据库中的 Latin1 中。我知道我为数据库选择 Latin1 是有原因的，但不记得它是什么。有趣的是，我们当前的设置似乎允许非 UTF-8 字符输入和后续渲染......似乎在 Latin1 中存储不会阻止所有 UTF-8 字符的后续解码和显示？

回答by codemonkey

Read up on http://us.php.net/manual/en/function.html-entity-decode.php

阅读http://us.php.net/manual/en/function.html-entity-decode.php

That & symbol is a html code so you can easily decode it.

那个 & 符号是一个 html 代码，所以你可以很容易地解码它。

回答by lalo

It does not work You need to use $arr1 = str_split($str) then foreach and echo($arr1[$k]) This will show you exactly which characters are written into the string.

它不起作用您需要使用 $arr1 = str_split($str) 然后 foreach 和 echo($arr1[$k]) 这将显示您确切地将哪些字符写入字符串。

回答by Rizwan Siddiquee

Please Try this. 


$find[] = '/“/' //'a?'; // left side double smart quote
$find[] = '/”/' //'a'; // right side double smart quote
$find[] = '/‘/' //'a?'; // left side single smart quote
$find[] = '/’/' //'a?'; // right side single smart quote
$find[] = '/â€&#133/'  //'a|'; // elipsis
$find[] = '/‖/' //'a”'; // em dash
$find[] = '/–/' //'a“'; // en dash

$replace[] = '“' // '"';
$replace[] = '”' // '"';
$replace[] = '‘' // "'";
$replace[] = '’' // "'";
$replace[] = '⋯' // "...";
$replace[] = '—' // "-";
$replace[] = '–' // "-";

$text = str_replace($find, $replace, $text);