从数据库中获取数组作为数据删除[和"“ - fetching array as data from db removes [ and " "

fetching array as data from db removes [ and " "

我的抓取代码是这样的:

 <?php
$con = mysql_connect("localhost","root","");
if (!$con) {
  die('Could not connect: ' . mysql_error());
}
mysql_select_db("planning", $con);
$query = mysql_query("SELECT sewing_end FROM tbl_input");
while($r = mysql_fetch_array($query)) {
    $category['data'][] = mysql_escape_string($r['sewing_end']);   
}
print json_encode($category['data']);
mysql_close($con);
?>

我的输出是:

["2015-09-20","2015-09-30","2015-09-25","2015-09-19","2015-09-08","2015-09-07","2015-09-16","2015-09-12","2015-09-10","2015-09-03"]

现在，当我从DB获取数据时，我想删除[]和" "。

是这样的吗?

$dates = $category['data'];

foreach($dates as $date){
    echo "'".$date."'";
    echo "<br/>";
}