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json_encode 用法

2016-03-08 22:30 337 查看
echo 'NULL';var_dump(json_decode(json_encode($body)));
echo  "<br/>";
echo 'function';var_dump(json_encode_cn($body));
echo  "<br/>";
echo 'JSON_HEX_QUOT';var_dump(json_encode($body,JSON_HEX_QUOT));
echo  "<br/>";
echo 'JSON_HEX_TAG';var_dump(json_encode($body,JSON_HEX_TAG));
echo  "<br/>";
echo 'JSON_HEX_AMP';var_dump(json_encode($body,JSON_HEX_AMP));
echo  "<br/>";
echo 'JSON_HEX_APOS';var_dump(json_encode($body,JSON_HEX_APOS));
echo  "<br/>";
echo 'JSON_NUMERIC_CHECK';var_dump(json_encode($body,JSON_NUMERIC_CHECK));//php5.3.3
echo  "<br/>";
echo 'JSON_PRETTY_PRINT';var_dump(json_encode($body,JSON_PRETTY_PRINT));
echo  "<br/>";
echo 'JSON_UNESCAPED_SLASHES';var_dump(json_encode($body,JSON_UNESCAPED_SLASHES));
echo  "<br/>";
echo 'JSON_FORCE_OBJECT';var_dump(json_encode($body,JSON_FORCE_OBJECT));
echo  "<br/>";
echo 'JSON_UNESCAPED_UNICODE';var_dump(json_encode($body,JSON_UNESCAPED_UNICODE));//php4.0 解决中文乱码,与function json_encode_cn作用一样

function json_encode_cn($data) {
$data = json_encode ( $data );
return preg_replace ( "/\\\u([0-9a-f]{4})/ie", "iconv('UCS-2BE', 'UTF-8', pack('H*', '$1'));", $data );
}
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