一、将整数转成字符:
String.fromCharCode(17496>>8,17496&0xFF,19504>>8,19504&0xFF,12848>>8,12848&0xFF,13360>>8,13360&0xFF,17969>>8,17969&0xFF,12592>>8,12592&0xFF,12337>>8,12337&0xFF,14592>>8,14592&0xFF)
//结果:DXL02040F110019
二、将json传过来的数据, unicode 编码的字符转成普通字符:
function ascii2native(asciicode) {
asciicode = asciicode.split("\\u");
var nativeValue = asciicode[0];
for (var i = 1; i < asciicode.length; i++) {
var code = asciicode[i];
nativeValue += String.fromCharCode(parseInt("0x" + code.substring(0, 4)));
if (code.length > 4) {
nativeValue += code.substring(4, code.length);
}
}
return nativeValue;
}
//调用
ascii2native("D\u0000\u0000\u0000X\u0000\u0000\u0000L\u0000\u0000\u00000\u0000\u0000\u00002\u0000\u0000\u00000\u0000\u0000\u00004\u0000\u0000\u00000\u0000\u0000\u0000F\u0000\u0000\u00001\u0000\u0000\u00001\u0000\u0000\u00000\u0000\u0000\u00000\u0000\u0000\u00001\u0000\u0000\u00009\u0000\u0000\u0000\u0000\u0000\u0000\u0000")
//结果:DXL02040F110019
下面是摘抄的:
-
将十进制数字 97 (ASCII 字符 a)存入文件,然后读出来。
- admin 2012-10-23
- 2
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#include
int
main() {
FILE
*fp;
int
a[1] = {97};
// 这个数组只存放一个数:97
fp =
fopen
(
"./1.data"
,
"wb"
);
fwrite
(a, 4, 1, fp);
fclose
(fp);
return
0;
}
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00000000 61 00 00 00 |a...|
00000004
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#include
int
main() {
FILE
*fp;
int
a[4] = {97, 98, 99, 100};
char
c[16];
fp =
fopen
(
"./1.data"
,
"rb"
);
fread
(c, 16, 1, fp);
fclose
(fp);
int
i;
for
(i=0; i<4; i++) {
printf
(
"%02x "
, c[i]);
}
printf
(
"\r\n------------\r\n"
);
for
(i=0; i<1; i++) {
printf
(
"%d"
, a[i]);
}
return
0;
}
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61 00 00 00
------------
97
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$s
= pack(
"L*"
, 97);
file_put_contents
(
'./1.data'
,
$s
);
?>
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function
int_to_string(
$arr
) {
$s
=
''
;
foreach
(
$arr
as
$v
) {
$a
= sprintf(
'%08x'
,
$v
);
$b
=
''
;
// int 在内存中为逆序存放
$b
.=
chr
(
base_convert
(
substr
(
$a
, 6, 2), 16, 10));
$b
.=
chr
(
base_convert
(
substr
(
$a
, 4, 2), 16, 10));
$b
.=
chr
(
base_convert
(
substr
(
$a
, 2, 2), 16, 10));
$b
.=
chr
(
base_convert
(
substr
(
$a
, 0, 2), 16, 10));
//echo $a;
$s
.=
$b
;
}
return
$s
;
}
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