How to remove Chinese characters in string in php

php method to delete Chinese characters in a string: You can use the preg_replace() function to replace Chinese characters with empty characters. The preg_replace() function performs a regular expression search and replacement. The search pattern can be a string or an array of strings.

The preg_replace function performs a regular expression search and replace.

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Syntax:

mixed preg_replace(mixed $pattern, mixed $replacement, mixed $subject[,int $limit = -1[,int &$count]])

Return value:

If subject is an array , preg_replace() returns an array, otherwise a string. If a match is found, the replaced subject is returned, otherwise the unchanged subject is returned. If an error occurs, NULL is returned.

Parameters:

• #$pattern: The pattern to be searched, which can be a string or a string array.

• $replacement: String or array of strings used for replacement.

• $subject: The target string or string array to be searched and replaced.

• $limit: Optional, the maximum number of substitutions for each subject string per pattern. The default is -1 (no limit).

• $count: Optional, the number of times the replacement is performed.

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Code implementation:

<?php  
header(&#39;Content-type:text/html;charset=utf-8&#39;);  
  
  function p($arr){  
    echo "<pre class="brush:php;toolbar:false">";  
    print_r($arr);  
    echo "

"; } $a = "河蟹）（社会afeowa#$%^!@@#zf吃饭fawgwea汉堡包agho_iawghowi我日）"; $result = preg_replace('/([\x80-\xff]*)/i','',$a); p($result);

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