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run code in 150+ php & hhvm versions
Bugs & Features
<?php function unicode_encode($str, $encoding = 'GBK', $prefix = '&#', $postfix = ';') { $str = iconv($encoding, 'UCS-2', $str); $arrstr = str_split($str, 2); $unistr = ''; for($i = 0, $len = count($arrstr); $i < $len; $i++) { $dec = hexdec(bin2hex($arrstr[$i])); $unistr .= $prefix . $dec . $postfix; } return $unistr; } /** * $str Unicode编码后的字符串 * $decoding 原始字符串的编码,默认GBK * $prefix 编码字符串的前缀,默认"&#" * $postfix 编码字符串的后缀,默认";" */ function unicode_decode($unistr, $encoding = 'GBK', $prefix = '&#', $postfix = ';') { $arruni = explode($prefix, $unistr); $unistr = ''; for($i = 1, $len = count($arruni); $i < $len; $i++) { if (strlen($postfix) > 0) { $arruni[$i] = substr($arruni[$i], 0, strlen($arruni[$i]) - strlen($postfix)); } $temp = intval($arruni[$i]); $unistr .= ($temp < 256) ? chr(0) . chr($temp) : chr($temp / 256) . chr($temp % 256); } return iconv('UCS-2', $encoding, $unistr); } //GBK字符串测试 $str = '<b>哈哈</b>'; echo $str.'<br />'; $unistr = unicode_encode($str); echo $unistr.'<br />'; // &#60;&#98;&#62;&#21704;&#21704;&#60;&#47;&#98;&#62; $str2 = unicode_decode($unistr); echo $str2.'<br />'; //<b>哈哈</b> //UTF-8字符串测试 $utf8_str = iconv('GBK', 'UTF-8', $str); echo $utf8_str.'<br />'; // <b>鍝堝搱</b> 注:UTF在GBK下显示的乱码!可切换浏览器的编码测试 $utf8_unistr = unicode_encode($utf8_str, 'UTF-8'); echo $utf8_unistr.'<br />'; // &#60;&#98;&#62;&#21704;&#21704;&#60;&#47;&#98;&#62; $utf8_str2 = unicode_decode($utf8_unistr, 'UTF-8'); echo $utf8_str2.'<br />'; // <b>鍝堝搱</b> //其它后缀、前缀测试 $prefix_unistr = unicode_encode($str, 'GBK', "\\u", ''); echo $prefix_unistr.'<br />'; // \u60\u98\u62\u21704\u21704\u60\u47\u98\u62 $profix_unistr2 = unicode_decode($prefix_unistr, 'GBK', "\\u", ''); echo $profix_unistr2.'<br />'; //<b>哈哈</b>
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.5.34, 5.6.0 - 5.6.20, 5.6.28 - 7.0.5, 7.0.14 - 7.1.0
<b>哈哈</b><br />&#15360;&#25088;&#15872;&#23955;&#7512;&#12644;&#15360;&#12032;&#25088;&#15872;<br /><b>哈哈</b><br /><b>鍝堝搱</b><br />&#15360;&#25088;&#15872;&#23955;&#7512;&#12644;&#15360;&#12032;&#25088;&#15872;<br /><b>鍝堝搱</b><br />\u15360\u25088\u15872\u23955\u7512\u12644\u15360\u12032\u25088\u15872<br /><b>哈哈</b><br />
Output for 7.0.6 - 7.0.10
<b>哈哈</b><br /> Fatal error: Uncaught Error: Call to undefined function iconv() in /in/CD1Zn:3 Stack trace: #0 /in/CD1Zn(36): unicode_encode('<b>\xE5\x93\x88\xE5\x93\x88</b>') #1 {main} thrown in /in/CD1Zn on line 3
Process exited with code 255.
Output for 5.5.35 - 5.5.38, 5.6.21 - 5.6.25
<b>哈哈</b><br /> Fatal error: Call to undefined function iconv() in /in/CD1Zn on line 3
Process exited with code 255.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/CD1Zn on line 57
Process exited with code 255.
Output for 4.4.5 - 4.4.9
<b>哈哈</b><br /> Fatal error: Call to undefined function: iconv() in /in/CD1Zn on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.4
<b>哈哈</b><br /> Fatal error: Call to undefined function: iconv() in /in/CD1Zn on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
<b>哈哈</b><br /> Fatal error: Call to undefined function: iconv() in /in/CD1Zn on line 3