Question

我想从mysql数据库中获取时间列并与当前时间进行比较。只有当它与当前时间匹配时才应该执行。我是php的新手。 This is my Table

我尝试的是

 <?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
 // Check connection
if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
} 
$today = date("h:i a")
$sql = "SELECT * FROM Table_name WHERE time = $today";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
  // execute you code
} else {

}

$conn->close();
?>

但问题出现在我的表连字符和＆＃39;或＆＃39;符号存在，我不知道如何比较？是否可以像这种格式一样比较时间？

时间列的数据类型是longtext

Answer 1

为此，您只需更改数据库中存储时间的方式即可。将时间存储在UNIX TIMESTAMP中。我使用了你的代码。

要插入UNIX TIMESTAMP的mysql

$sql = "INSERT into `Table_name` set time = time()";

您的代码经过修改 $ today = time（）;

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
 // Check connection
if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
} 

$today = time();

$sql = "SELECT * FROM Table_name WHERE time = '".$today."'";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
  // execute you code
} else {

}

$conn->close();
?>

我想从MySQL数据库中获取时间列

1 个答案: