我想选择表的最后一行,并将所有值保存到单独的JavaScript变量中。我在PHP:中使用了查询
$sql = "SELECT * from reading ORDER BY id DESC LIMIT 1";
选择表格的最后一行。我不知道该怎么办。
PHP:
$sql = "SELECT * from reading ORDER BY id DESC LIMIT 1";
if ($query = mysqli_query($link, $sql)) {
// fetch one result
$row = mysqli_fetch_row($query);
echo json_encode($row);
}
jQuery:
// sample variables
var username = "";
var password = "";
var phpUrl = 'http://sampleurl.com/mypage.php';
$.getJSON(phpUrl, function (result) {
$.each(result, function (data) {
// if data sent back is eg data:[{username:'sample', password:'sample'}]
// then you fetch and save as
username = data.username;
password = data.password;
});
});
cookies的方式肯定是可行的。如果你在一个页面上完成所有这些,并且只需要快速修复,你可以进行
<?php
$sql = "SELECT * from reading ORDER BY id DESC LIMIT 1";
if ($query = mysqli_query($link, $sql)) {
// fetch one result
$row = mysqli_fetch_row($query);
$json_string = json_encode($row);
}
?>
<script> var sql_row = <?php echo $json_string; ?>; </script>
这是一种懒惰的方式,会很快变得混乱,但它可能有助于理解PHP和JS如何协同工作