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Example sharing of two methods for converting PHP array encoding gbk and utf8 to each other
Example sharing of two methods for converting PHP array encoding gbk and utf8 to each other
这篇文章给大家分享了两种转换的方法，都可以实现PHP数组的编码进行相互转换。大家可以参考自己的实际情况进行选择哪一种方法，下面来一起看看吧。
一、利用var_export(), eval()方法
/**
* 将含有GBK的中文数组转为utf-8
*
* @param array $arr 数组
* @param string $in_charset 原字符串编码
* @param string $out_charset 输出的字符串编码
* @return array
*/
function array_iconv($arr, $in_charset="gbk", $out_charset="utf-8")
{
$ret = eval('return '.iconv($in_charset,$out_charset,var_export($arr,true).';'));
return $ret;
// 这里转码之后可以输出json
// return json_encode($ret);
}原理很简单 var_export设置第二个参数为true，返回数组原型字符串，将字符串转换为utf-8编码，之后再用eval来执行返回（类似匿名函数？），至此完美解决问题。
eval() 函数小结：
条件：eval() 函数把字符串按照 PHP 代码来计算。该字符串必须是合法的 PHP 代码，且必须以分号结尾。
如果没有在代码字符串中调用 return 语句，则返回 NULL。如果代码中存在解析错误，则 eval() 函数返回 false。
$a ="hello";
$res = eval("return $a;");
print_r($res);
// 在赋值时必须用反斜杠对$标示符进行转义
eval("\$str = \"$str\";");
echo $str;二、利用递归将数组转码
/**
* UTF-8编码 GBK编码相互转换/（支持数组）
*
* @param array $str 字符串，支持数组传递
* @param string $in_charset 原字符串编码
* @param string $out_charset 输出的字符串编码
* @return array
*/
function array_iconv($str, $in_charset="gbk", $out_charset="utf-8")
{
if(is_array($str))
{
foreach($str as $k => $v)
{
$str[$k] = array_iconv($v);
}
return $str;
}
else
{
if(is_string($str))
{
// return iconv('UTF-8', 'GBK//IGNORE', $str);
return mb_convert_encoding($str, $out_charset, $in_charset);
}
else
{
return $str;
}
}
}总结
PHP将数组编码gbk和utf-8相互转换的内容到这就基本结束了，文章介绍的很详细，具有一定的参考价值，希望这篇文章对大家的学习和工作能带来一定的帮助。
以上就是本篇文的全部内容，希望能对大家的学习有所帮助。
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