PHP 数组逗号分隔的字符串
PHP array comma separated string
我有一个问题。我尝试用逗号分隔 MySQL 数据库的输出。不知何故,这是行不通的。
PHP代码:
echo "[";
if ($result = $con->query("SELECT * FROM table")) {
while($row = $result->fetch_array(MYSQLI_ASSOC)) {
$timestamp = strtotime($row['datetime']);
echo "[" . $timestamp . "000" . "," . $row['temp'] . "]" . ",";
}
}
$result->close();
$con->close();
echo "]";
输出:
[[1591072800000,12.5],[1591073100000,12.6], ........ [1591367100000,21.6],[1591367160000,21.5],]
最后一个逗号太多了,必须去掉。
有人对此有办法吗?
非常感谢
PS.:
我已经用 implode ()
试过了,但没有成功。
PHP代码:
$arr = array("[" . $timestamp . "000" . "," . $row['temp'] . "]");
echo implode(", ",$arr);
输出:
[[1591072800000,12.5][1591073100000,12.6]........[1591367580000,20.7][1591367640000,20.5]]
为什么不将您想要的内容放入适当的数组中,然后回显 json?
$output = array();
if ($result = $con->query("SELECT * FROM table")) {
while($row = $result->fetch_array(MYSQLI_ASSOC)) {
$output[] = array(strtotime($row['datetime']) . "000", $row['temp']);
}
}
$result->close(); $con->close();
echo json_encode($output);`
我有一个问题。我尝试用逗号分隔 MySQL 数据库的输出。不知何故,这是行不通的。
PHP代码:
echo "[";
if ($result = $con->query("SELECT * FROM table")) {
while($row = $result->fetch_array(MYSQLI_ASSOC)) {
$timestamp = strtotime($row['datetime']);
echo "[" . $timestamp . "000" . "," . $row['temp'] . "]" . ",";
}
}
$result->close();
$con->close();
echo "]";
输出:
[[1591072800000,12.5],[1591073100000,12.6], ........ [1591367100000,21.6],[1591367160000,21.5],]
最后一个逗号太多了,必须去掉。
有人对此有办法吗?
非常感谢
PS.:
我已经用 implode ()
试过了,但没有成功。
PHP代码:
$arr = array("[" . $timestamp . "000" . "," . $row['temp'] . "]");
echo implode(", ",$arr);
输出:
[[1591072800000,12.5][1591073100000,12.6]........[1591367580000,20.7][1591367640000,20.5]]
为什么不将您想要的内容放入适当的数组中,然后回显 json?
$output = array();
if ($result = $con->query("SELECT * FROM table")) {
while($row = $result->fetch_array(MYSQLI_ASSOC)) {
$output[] = array(strtotime($row['datetime']) . "000", $row['temp']);
}
}
$result->close(); $con->close();
echo json_encode($output);`