Question

<?php
$username = "trainerapp";
$password = "password";
$hostname = "localhost";
$link     = @mysql_connect($hostname, $username, $password);

if (@mysql_select_db("trainer_registration")) {
    $select_query_num = @mysql_query("select id from program_details");
    $num_rows         = @mysql_num_rows($select_query_num);
    while ($row = @mysql_fetch_assoc($select_query_num)) {
        $j            = $row['id'];
        $select_query = @mysql_query("select id,program_name,company,date_prog from program_details where id = $j");
        $fetch_query  = @mysql_fetch_assoc($select_query);
        $id           = $fetch_query['id'];
        $pgmname      = $fetch_query['program_name'];
        $comp         = $fetch_query['company'];
        $datephp      = $fetch_query['date_prog'];

        $arr[] = array(
            $id,
            $pgmname,
            $comp,
            $datephp
        );

    }

    echo json_encode($arr);
}
?>

CURRENT OUTPUT：

[["1","Sample","Apple","2015-05-27"],["2","Sample 2","Lenovo","2015-05-28"],["14","3","3","09-29-2015"]]

我不明白这个输出。

问题：

json_encode实际返回了什么？由＆＃39;，＆＃39;？分隔的所有值的字符串或数组因为当我在js文件中尝试str.length（）时，它返回了126

如何获得单行输出

["1","Sample","Apple","2015-05-27"]
["2","Sample 2","Lenovo","2015-05-28"]
["14","3","3","09-29-2015"]

在javascript中的数组中，因为我需要在单独的列下的html中插入它们。即，列＃34; ID＆＃34;下的1,2,14，样本，样本2,3，列＃34;程序名称＆＃34;，依此类推。请帮助解析这个数组。

Answer 1

1 - http://php.net/manual/en/function.json-encode.php所有人都在那里。

2 - Convert php array to Javascript它会对你有帮助。

3 - 如果您需要一个数组，为什么在代码中使用json_encode。

4 - 你知道为什么在很多地方使用let pred = NSPredicate(format: "content IN %@ AND (tallied == 0 OR comment != '')", arr) let query = CKQuery(recordType: "Rating", predicate: pred)？像这样的代码真的很糟糕。

如何解析数组？

1 个答案: