PHP implements filtering Chinese and numerical examples in strings, _PHP tutorial

Examples of php filtering Chinese characters and numbers in strings,

This article describes the example of php filtering Chinese characters and numbers in strings. Share it with everyone for your reference. The specific implementation method is as follows:

function getChinese($string,$encode="GBK") {
  switch($encode){
   case "GBK" :$codelength=2;break;
   case "GB2312" :$codelength=3;break;
   case "UTF-8" :$codelength=3;break;
   case "UTF-16" :$codelength=4;break;
  }
  $tmpstr = '';
  $arr = array(1,2,3,4,5,6,7,8,9,0);
  $strlen = strlen($string);
  for($i=0; $i<$strlen; $i++) {
   $str=substr($string, $i, 1);
   $str1=trim($str);
   if( ord($str)>0xA0 ){
   $tmpstr.= substr($string, $i, $codelength);
   $i = $i+$codelength-1;
   }
  }
 return $tmpstr;
}

I hope this article will be helpful to everyone’s PHP programming design.

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