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标题:
PHP的escape函数的实现方法
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作者:
fesite
时间:
2014-9-16 18:27
标题:
PHP的escape函数的实现方法
很多时候需要用到js的escape函数来转换中文字符,可是用js转换后的字符怎么用php来转换回来呢,下面我就找到了两个很实用的函数。
GB2312编码:
function
unescape
(
$str
)
{
$str
=
rawurldecode
(
$str
)
;
preg_match_all
(
"
/%u.{4}|&#x.{4};|&#d+;|.+/U
"
,
$str
,
$r
)
;
$ar
=
$r
[
0
;
foreach
(
$ar
as
$k
=>
$v
)
{
if
(
substr
(
$v
,
0
,
2
)
==
"
%u
"
)
$ar
[
$k
=
iconv
(
"
UCS-2
"
,
"
GBK
"
,
pack
(
"
H4
"
,
substr
(
$v
,-
4
)))
;
elseif
(
substr
(
$v
,
0
,
3
)
==
"
&#x
"
)
$ar
[
$k
=
iconv
(
"
UCS-2
"
,
"
GBK
"
,
pack
(
"
H4
"
,
substr
(
$v
,
3
,-
1
)))
;
elseif
(
substr
(
$v
,
0
,
2
)
==
"
&#
"
)
{
$ar
[
$k
=
iconv
(
"
UCS-2
"
,
"
GBK
"
,
pack
(
"
n
"
,
substr
(
$v
,
2
,-
1
)))
;
}
}
return
join
(
""
,
$ar
)
;
}
作者:
fesite
时间:
2014-9-16 18:27
UTF8编码:
function unescape($str){
$ret = '';
$len = strlen($str);
for ($i = 0; $i < $len; $i++){
if ($str[$i] == '%' && $str[$i+1] == 'u'){
$val = hexdec(substr($str, $i+2, 4));
if ($val < 0x7f) $ret .= chr($val);
else if($val < 0x800) $ret .= chr(0xc0|($val>>6)).chr(0x80|($val&0x3f));
else $ret .= chr(0xe0|($val>>12)).chr(0x80|(($val>>6)&0x3f)).chr(0x80|($val&0x3f));
$i += 5;
}
else if ($str[$i] == '%'){
$ret .= urldecode(substr($str, $i, 3));
$i += 2;
}
else $ret .= $str[$i];
}
return $ret;
}
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