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HomeBackend DevelopmentPHP TutorialExample 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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