How to convert php utf8 to unicode
php utf8转unicode的方法:首先创建一个PHP示例文件;然后通过“iconv($encoding, 'UCS-2BE', $str);”方法实现转换即可。
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linux下php中文UTF-8转换Unicode方法和注意事项
先说下遇到问题:1.php没有内置unicode_ecode函数可以直接使用
2.网上很多资料都是用$str
= iconv(
$encoding
,
'UCS-2'
,
$str
);
window下转换出来的是正常的,但在Linux下转换出来的两个字符是相反的,用在线unicode转换工具出来的结果是乱码。
UCS-2的编码规则:
windows下默认是UCS-2LE。
linux下默认是UCS-2BE。用iconv(指定UCS-2)来转换生成的是UCS-2BE的unicode,但可能php环境配置会导致不是UCS-2BE。
windows和linux等多个平台对 UCS-2 的理解不同(UCS-2LE,UCS-2BE),所以为了统一需要直接指定为UCS-2BE。
即把:$str
= iconv(
$encoding
,
'UCS-2'
,
$str
); 改为<code class="php variable">$str
= iconv(
$encoding
,
'UCS-2BE'
,
$str
);
亲测转换出来的unicode可以正常转换的
下面是两个本人亲测可以使用的函数(为了避免以后跟系统新的内置函数同名在前面加了个my前缀):
/** * utf-8 转unicode * @param string $name * @return string */ function myutf8_unicode($name){ $name = iconv('UTF-8', 'UCS-2BE', $name); $len = strlen($name); $str = ''; for ($i = 0; $i < $len - 1; $i = $i + 2){ $c = $name[$i]; $c2 = $name[$i + 1]; if (ord($c) > 0){ $str .= '\u'.base_convert(ord($c), 10, 16).str_pad(base_convert(ord($c2), 10, 16), 2, 0, STR_PAD_LEFT); } else { $str .= '\u'.str_pad(base_convert(ord($c2), 10, 16), 4, 0, STR_PAD_LEFT); } } return $str; } /** * unicode 转 utf-8 * * @param string $name * @return string */ function myunicode_decode($name) { $name = strtolower($name); // 转换编码,将Unicode编码转换成可以浏览的utf-8编码 $pattern = '/([\w]+)|(\\\u([\w]{4}))/i'; preg_match_all($pattern, $name, $matches); if (! empty($matches)) { $name = ''; for ($j = 0; $j < count($matches[0]); $j ++) { $str = $matches[0][$j]; if (strpos($str, '\\u') === 0) { $code = base_convert(substr($str, 2, 2), 16, 10); $code2 = base_convert(substr($str, 4), 16, 10); $c = chr($code) . chr($code2); $c = iconv('UCS-2BE', 'UTF-8', $c); $name .= $c; } else { $name .= $str; } } } return $name; }
测试代码:
$ustr = myutf8_unicode('我的新衣'); echo '我的新衣:'.$ustr.'<br>'; $str = myunicode_decode($ustr); echo $str.'<br>';
输出结果:
在站长工具里可以正常转换,说明没有问题。
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