Php string and byte array conversion class example

Source: Internet
Author: User

This article provides a php string and byte array conversion class example. I hope this article will be helpful to you.

The Code is as follows: Copy code
<? Php

/**
 
* 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 arrays 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 the Target byte array

* @ Param $ val: 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 data from the specified position in the byte array

* @ Param $ bytes byte array

* @ Param $ position specifies the start position.

* @ Return an Integer data type

*/

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 shor string to a byte array.

* @ Param $ byt the Target byte array

* @ Param $ val: string to be converted

*

*/

Public static function extends tobytes ($ 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 specifies the start 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;
}

}
?>

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