Strlen沒有給出正確的輸出

-1

我有一個字符串，我從數據庫中檢索，我想計算字符串的長度沒有空格，但它顯示一個較大的長度值（比實際計數大21個字符）I已經刪除了標籤和換行符以及php和html標籤，但沒有結果！我已經嘗試了幾乎w3schools php參考的所有功能，但是我無法找到任何成功。我還觀察到，如果我不從數據庫中檢索輸入值這樣的：Strlen沒有給出正確的輸出

$string = "my string";

我得到正確的長度，請幫助我。下面是代碼：

if($res_tutor[0]['tutor_experience']){ 
     $str = trim(strip_tags($res_tutor[0]['tutor_experience'])); 
      $str = $this->real_string($str); 
      $space = substr_count($str, ' '); 
      $experience = strlen($str) - $space; 


function real_string($str) 
{ 
    $search = array("\t","\n","\r\n","\0","\v"); 
    $replace = array('','','','',''); 
    $str = str_replace($search,$replace,$str); 
    return $str; 
}

這是從數據庫中字符串，但你可以看到上面我已刪除了使用strip_tags()所有php和html標籤：

<span class=\"experience_font\">You are encouraged to write a short description of yourself, teaching experience and teaching method. You may use the guidelines below to assist you in your writing.<br /> 
    <br /> 
    .Years of teaching experience<br /> 
    .Total number of students taught<br /> 
    .Levels &amp; subjects that you have taught<br /> 
    .The improvements that your students have made<br /> 
    .Other achievements/experience (Relief teaching, a tutor in a tuition centre, Dean&#39;s list, scholarship, public speaking etc.)<br /> 
    .For Music (Gigs at Esplanade, Your performances in various locations etc.)</span><br /> 
    &nbsp;</p>

，當我打印出來，它顯示爲：

<span class=\"experience_font\">You are encouraged to write a short description of yourself, teaching experience and teaching method. You may use the guidelines below to assist you in your writing.<br /> 
    <br /> 
    .Years of teaching experience<br /> 
    .Total number of students taught<br /> 
    .Levels &amp; subjects that you have taught<br /> 
    .The improvements that your students have made<br /> 
    .Other achievements/experience (Relief teaching, a tutor in a tuition centre, Dean&#39;s list, scholarship, public speaking etc.)<br /> 
    .For Music (Gigs at Esplanade, Your performances in various locations etc.)</span><br /> 
    &nbsp;</p>

來源

2012-10-31 irohit786

如果您正在瀏覽器中查看，請確保沒有任何html標籤以及其中的內容。只是因爲你看不到多餘的字符意味着很少。 –

有額外的標籤，我已經刪除了使用strip_tags（） – irohit786

我不明白...我用你輸入的輸入運行你的代碼，它對我來說工作正常。它必須與你從db得到的東西有關......你需要添加更多的代碼，嘗試從db直接複製文本或類似的東西。 – hummingBird

@Svetilo，不粗魯只是想後我發現，你的str_replace工作很好，除了我仍然按照你現在的順序輸出不正確的值，我發現以下工作完美無缺。

$string = str_replace(array("\t","\r\n","\n","\0","\v"," "),'', $string); 
mb_strlen($string, "UTF-8");

圍繞\ r \ n & \將N-所作的str_replace函數不去掉從\ r \ n離開它只是一個\ r成\ n。

乾杯。

來源

2013-01-02 10:00:16

嘗試使用mb_strlen。 http://php.net/manual/en/function.mb-strlen.php 它更精確。

mb_strlen($str,"UTF-8")

凡UTF-8是你的默認編碼... 要刪除所有空格自由嘗試類似的東西..

$string = str_replace(array("\t","\n","\r\n","\0","\v"," "),"",$string); 
mb_strlen($string, "UTF-8");

來源

2012-10-31 14:14:33 Svetoslav

之上，對不起，不起作用，結果相同！和我的編碼是「ASCII」 thanx，是兄弟，我已經試過上面。 – irohit786

Strlen沒有給出正確的輸出

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