php struct下載php struct源代碼下載

php struct

其他類別

1.0.0

下載

PHP結構

php中的結構實現。它支持解碼二進製文件。

創建一個新的結構

 $ myStruct_t = new Struct (
  " foo " , uint32_t,        //single uint32_t
  " baz " , uint8_t, 30      //array of 30 unsigned chars
);

您可以為成員指定標誌，例如：

 $ myStruct_t = new Struct (
  " beval " , uint32_t, 1 , ENDIAN_BIG ,       //big endian value
  " leval " , uint32_t, 1 , ENDIAN_LITTLE ,    //little endian value
  " myString " , int8_t, 32 , VAR_STRING ,     //string of 32 characters
  " myNumber " , uint32_t, 1 , VAR_NUMERIC ,   //explicitly uses the PHP's int type
);

您可以使用flag_strsz表示此成員將指定即將到來的字符串的大小

 $ string_t = new Struct (
  " strSz " , uint32_t, 1 , FLAG_STRSZ ,   //a string follow, and its length is indicated by this member
  " varString " , uint8_t, 0 ,            //the size will be replaced at runtime due to FLAG_STRSZ
);

FLAG_STRSZ的使用使結構大小無法預測。

您也可以使用嵌套結構：

 $ myStruct_t = new Struct (
  " foo " , uint32_t,        //single uint32_t
  " baz " , uint8_t, 30      //array of 30 unsigned chars
);

$ otherStruct_t = new Struct (
  " magic " , uint8_t, 4 ,
  " elements " , $ myStruct_t , 32 , //creates an array of 32 structures
);

結構和文件：

 // Clone the structure template
$ header = clone ( $ header_t );
// Simple check for proper arguments
if ( $ argc < 2 || ! file_exists ( $ argv [ 1 ])){
	fprintf ( STDERR , " File not found! n" );
	return 1 ;
}
// Open the specified file in read mode
$ f = fopen ( $ argv [ 1 ], " rb " );
// Get enough data to fill the structure
$ d = fread ( $ f , $ header -> getSize ());
// We don't need the file anymore
fclose ( $ f );

// Put the data we read into the structure
$ header -> apply ( $ d );

解析元素

 printf ( " Struct size: %d n" , $ header -> getSize ());
foreach ( $ header -> members as $ name => $ member ){
  printf ( " member '%s', value: 0x%x n" , $ name , $ member -> getValue ());
}

和嵌套結構？

 function printStruct ( $ struct ){
	foreach ( $ struct -> members as $ name => $ memb ){
		$ value = $ memb -> getValue ();
		if ( is_array ( $ value )){
			if (Struct:: isStructArray ( $ value )){
				foreach ( $ value as $ subStruct ){
					printStruct ( $ subStruct );
				}
			} else {
				//print array of bytes/elements
				printf ( " %s n" , $ name );
				var_dump ( $ value );
			}
		} else {
			//print element/value
			printf ( " %s => 0x%x n" , $ name , $ value );
		}
	}
}