php stdClass Object 问题
2014-08-04 22:20 youxin 阅读(1839) 评论(0) 编辑 收藏 举报
Array ( [0] => stdClass Object ( [term_id] => 3 [name] => apache [slug] => apache [term_group] => 0 [term_taxonomy_id] => 3 [taxonomy] => category [description] => [parent] => 0 [count] => 1 [cat_ID] => 3 [category_count] => 1 [category_description] => [cat_name] => apache [category_nicename] => apache [category_parent] => 0 ) [1] => stdClass Object ( [term_id] => 1 [name] => PHP [slug] => php [term_group] => 0 [term_taxonomy_id] => 1 [taxonomy] => category [description] => [parent] => 0 [count] => 1 [cat_ID] => 1 [category_count] => 1 [category_description] => [cat_name] => PHP [category_nicename] => php [category_parent] => 0 ) )
二维数组stdClass Object是一组json对象,如果要调用里面的数据,就要这样调用,
foreach($categories as $key => $value){
$cat = $value->term_id;
$name = $value->name;
}
或者json_decode第二个参数设为true:
mixedjson_decode ( string$json [, bool$assoc ] )
说明:接受一个 JSON 格式的字符串并且把它转换为 PHP 变量。
json_decode 可接收两个参数:
json:待解码的jsonstring 格式的字符串。
assoc:当该参数为 TRUE 时,将返回 array 而非 object 。
$students = json_decode($json,true);
这时打印一下 $students :
var_dump($students);
输出:
array(2) {
[0]=>
array(4) {
["id"]=> string(1)"1"
["name"]=> string(9)"张雪梅"
["age"]=> string(2)"27"
["subject"]=>string(24) "计算机科学与技术"
}
[1]=>
array(4) {
["id"]=> string(1)"2"
["name"]=> string(9)"张沛霖"
["age"]=> string(2)"21"
["subject"]=>string(12) "软件工程"
}
}
这时,$students 就是个数组了,可以直接用:
for($i=0;$i<count($students);$i++){
echo "姓名:".$students[$i]['name']."年龄:".$students[$i]['age']."专业:".$students[$i]['subject']."<br/>";
}
输出结果为:
姓名:张雪梅 年龄:27 专业:计算机科学与技术
姓名:张沛霖 年龄:21 专业:软件工程
总结:
在PHP代码中处理JSON 格式的字符串的两种方法:
方法一:
$json= '[{"id":"1","name":"\u5f20\u96ea\u6885","age":"27","subject":"\u8ba1\u7b97\u673a\u79d1\u5b66\u4e0e\u6280\u672f"},{"id":"2","name":"\u5f20\u6c9b\u9716","age":"21","subject":"\u8f6f\u4ef6\u5de5\u7a0b"}]';
$students= json_decode($json);//得到的是 object
foreach($studentsas $obj){
echo "姓名:".$obj->name." 年 龄:".$obj->age." 专 业:".$obj->subject."<br />";
}
方法二:
$json= '[{"id":"1","name":"\u5f20\u96ea\u6885","age":"27","subject":"\u8ba1\u7b97\u673a\u79d1\u5b66\u4e0e\u6280\u672f"},{"id":"2","name":"\u5f20\u6c9b\u9716","age":"21","subject":"\u8f6f\u4ef6\u5de5\u7a0b"}]';
$students= json_decode($json, true);//得到的是 array
for($i=0;$i<count($students);$i++){
echo "姓名:".$students[$i]['name']." 年 龄:".$students[$i]['age']." 专 业:".$students[$i]['subject']."<br />";
}
参考:http://blog.csdn.net/wuhanzaizai/article/details/6874845