PHP - 操作 json

输出 json 文件中文处理

<?php
$json_array = array();

// 1。转换为json字符串（不自动转换为unicode编码）
if (version_compare(PHP_VERSION,\'5.4.0\',\'<\'))
        $json_string = preg_replace_callback("#\\\u([0-9a-f]{4})#i", function($matchs){return iconv(\'UCS-2BE\',\'UTF-8\',pack(\'H4\', $matchs[1]));}, json_encode($json_array));
else
        $json_string = json_encode($json_array, JSON_UNESCAPED_UNICODE);

// 2。现在$json_string是gbk编码，转换为utf8
$json_string = iconv(\'GB2312\', \'UTF-8\', $tables);

// 3。输出到文件
file_put_contents(\'./json_string.json\', $json_string);

json 文件缩进调整

只能大概调整一下，以后再改进吧

/**
 * 重新调整json缩进
 * @Author   zjf
 * @DateTime 2017-03-10
 * @param    String     $json json字符串
 * @return   String     处理后的json字符串
 */
function reindent_json($json){
        preg_match_all(\'/\{|\}|,/\',$json,$matches);
        $tab = 0;
        $eol = PHP_EOL;
        foreach ($matches[0] as $key => $value) {
                if ($value == \'{\') {
                        $json = preg_replace(\'/\{(?!\'.$eol.\')/\', "{".$eol.str_repeat("\t", ++$tab), $json, 1);
                }elseif ($value == \'}\') {
                        $json = preg_replace(\'/([^\t])\}/\', "$1".$eol.str_repeat("\t", --$tab)."}", $json, 1);
                }elseif ($value == \',\') {
                        $json = preg_replace(\'/,(?!\'.$eol.\')/\', ",".$eol.str_repeat("\t", $tab), $json, 1);
                }
        }
        return $json;
}