Question

我是PHP的新手，现在我已经解决了这个问题。我有一个这样的字符串：

$string = "qwe,asd,zxc,rty,fgh,vbn";

现在我想要用户点击＆＃34; qwe＆＃34;它将删除＆＃34; qwe，＆＃34;在$ string

中

Ex:$string = "asd,zxc,rty,fgh,vbn";

或删除＆＃34; fhg，＆＃34;

Ex:$string = "asd,zxc,rty,vbn";

我尝试使用str_replace，但它只是删除了字符串，并且在字符串之前仍然有逗号，如下所示：

$string = ",asd,zxc,rty,fgh,vbn";

任何人都可以提供帮助？感谢您的阅读

Answer 1

为了实现您的目标，阵列是您最好的朋友。

$string = "qwe,asd,zxc,rty,fgh,vbn";
$ExplodedString = explode( "," , $string ); //Explode them separated by comma

$itemToRemove = "asd";

foreach($ExplodedString as $key => $value){ //loop along the array
    if( $itemToRemove == $value ){ //check if item to be removed exists in the array
        unset($ExplodedString[$key]); //unset or remove is found
    }
}

$NewLook = array_values($ExplodedString); //Re-index the array key

print_r($NewLook); //print the array content

$NewLookCombined = implode( "," , $NewLook);

print_r($NewLookCombined); //print the array content after combined back

Answer 2

这里的解决方案

$string = "qwe,asd,zxc,rty,fgh,vbn";
      $clickword = "vbn";          
      $exp = explode(",", $string);
      $imp =  implode(" ", $exp);

      if(stripos($imp, $clickword) !== false) {

       $var =  str_replace($clickword," ", $imp);

      }

      $str =  preg_replace('/\s\s+/',' ', $var);

      $newexp = explode(" ", trim($str));

      $newimp = implode(",", $newexp);
      echo $newimp;

Answer 3

试试这个：

$break=explode(",",$string);
$new_array=array();
foreach($break as $newData)
{
 if($newData!='qwe')
 {
  $new_array[]=$newData;
 }
}
$newWord=implode(",",$new_array);

echo $newWord;

Answer 4

如果您已设置模块，则可以尝试preg_replace http://uk3.php.net/manual/en/function.preg-replace.php。它允许您轻松地替换尾随或引导逗号：

preg_replace("/,*$providedString,*/i", '', "qwe,asd,zxc,rty,fgh,vbn");

如何用大字符串中的逗号删除字符串？

4 个答案: