我只想把陣列中的word裡面的值 取出來。

方法如下：正解（其他的欄位一樣，把word替換即可）

我的遇到的問題如下：

<?php  
@header('content-type:text/html;charset=utf-8');
function show_bug($msg){
echo "<pre>";
print_r($msg);
echo "</pre>";
}
//ini_set('user_agent','Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)');
//$url="http://redhatcn.cn//Home/Login/mmzh2/t/user";

// 所有[jb] => 後面的金額，所有金額相加
$url='array.txt';

$s=file_get_contents($url);

$rule='#(?<=\[jb\] =>)\s\w+#';
 

preg_match_all($rule,$s,$arr);

// $bool=is_array($arr);
// var_dump($bool);

//show_bug($arr);
$arr_num=$arr[0];
//array_sum函式返回陣列中所有值的總和。
echo '檔案中所有jb之和為：'.array_sum($arr_num);
?>

array.txt內容如下所示：

Array( [0] => Array ( [id] => 183 [cf] => 0 [date] => 2016-08-26 21:17:32 [zffs1] => 0 [zffs2] => 1 [zffs3] => 0 [jb] => 5000 [zt] => 1 [user] => 18676081117 [qr_zt] => 1 [user_tjr] => 18943636615 [user_nc] => ¿ÉÀÖ [cf_ds] => 0 [jycg_ds] => 0 [yid] => [ok] => 1 ) [1] => Array ( [id] => 240 [cf] => 0 [date] => 2016-09-03 12:06:50 [zffs1] => 1 [zffs2] => 1 [zffs3] => 1 [jb] => 8000 [zt] => 0 [user] => 15192777617 [qr_zt] => 0 [user_tjr] => 13987611435 [user_nc] => Ö콨¸Û [cf_ds] => 0 [jycg_ds] => 0 [yid] => [ok] => 1 ) )
 

參考連結：

http://bbs.csdn.net/topics/390960440?page=1#post-401552660