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PHP string and byte array conversion class example_PHP tutorial

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WBOYOriginal
2016-07-13 10:44:16966browse

The article provides you with an example of conversion between PHP string and byte array. I hope the article will be helpful to all students.

The code is as follows Copy code

/**

* Byte array and string conversion class

*/

class Bytes {

 
/**
​  
* Convert a String to a byte array
​  
* @param $str The string to be converted
​  
* @param $bytes target byte array
​  
* @author Zikie
​  
*/
Public static function getBytes($string) {
          $bytes = array();
for($i = 0; $i < strlen($string); $i++){
                $bytes[] = ord($string[$i]);
          }
          return $bytes;
}

 
/**
     
* Convert byte array to String type data
     
* @param $bytes byte array
     
* @param $str target string
     
* @return a String type data
     
*/

Public static function toStr($bytes) {
          $str = '';
foreach($bytes as $ch) {
                 $str .= chr($ch);
          }

              return $str;
}

 
/**
​  
* Convert an int to a byte array
​  
* @param $byt target byte array
​  
* @param $val The string to be converted
​  
*
​  
*/

Public static function integerToBytes($val) {
           $byt = array();
          $byt[0] = ($val & 0xff);
$byt[1] = ($val >> 8 & 0xff);
$byt[2] = ($val >> 16 & 0xff);
$byt[3] = ($val >> 24 & 0xff);
          return $byt;
}

 
/**
     
* Read an Integer type data from the specified position in the byte array
     
* @param $bytes byte array
     
* @param $position specified starting position
     
* @return an Integer type data
     
*/

Public static function bytesToInteger($bytes, $position) {
$val = 0;
          $val = $bytes[$position + 3] & 0xff;
$val <<= 8;
          $val |= $bytes[$position + 2] & 0xff;
$val <<= 8;
          $val |= $bytes[$position + 1] & 0xff;
$val <<= 8;
          $val |= $bytes[$position] & 0xff;
         return $val;
}

 
/**
​  
* Convert a short string to a byte array
​  
* @param $byt target byte array
​  
* @param $val The string to be converted
​  
*
​  
*/

Public static function shortToBytes($val) {
           $byt = array();
          $byt[0] = ($val & 0xff);
$byt[1] = ($val >> 8 & 0xff);
          return $byt;
}

 
/**
     
* Read a Short type data from the specified position in the byte array.
     
* @param $bytes byte array
     
* @param $position specified starting position
     
* @return a Short type data
     
*/

Public static function bytesToShort($bytes, $position) {
$val = 0;
          $val = $bytes[$position + 1] & 0xFF;
$val = $val << 8;
          $val |= $bytes[$position] & 0xFF;
         return $val;
}

}
?>

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/633109.htmlTechArticleThe article provides you with an example of conversion between php string and byte array. I hope the article will be useful to all students. helped. The code is as follows Copy code ?php /** * Convert byte array to string...
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