Question

请帮帮我我想通过下拉列表逐月搜索员工的数据，如1月，2月等和date字段是date type 0000-00-00。如何在php中搜索这种类型的数据谢谢..

<code>
<select name="month" id="month">
<option>
</option>
<option>
January
</option>
<option>
February
</option>
<option>
March

...

Answer 1

首先，您需要为表单选项提供月份数字的一些值。这将由您的数据库查询。您的操作可以是要显示数据的页面

   <form method="post" action="process.php">
    <select name="month" id="month">
        <option></option>
        <option value="1">January</option>
        <option value="2">February</option>
        <option value="3">March</option>
    </select>
   </form>

process.php

“用户名”和“密码”以及用于连接数据库的数据库用户名和密码

<?php
// Make a MySQL Connection
mysql_connect("localhost", "username", "password") or die(mysql_error());
mysql_select_db("database_name") or die(mysql_error());

$date = mysql_real_escape_string($_POST['month']);
// Retrieve all the data from the "example" table

//set date_column to the date field in your database
$sql ="SELECT * FROM table_name WHERE MONTH(date_column) = $date";
$result = mysql_query($sql)
or die(mysql_error());  

// store the record of the "example" table into $row
while($row = mysql_fetch_array($result)){

    // Print out the contents of the entry 
    extract($row, EXTR_PREFIX_INVALID, '_');

    //change these to whatever you want to display
    echo "Name: ".$row['column1'];
    echo " Age: ".$row['column2'];

}

?>

修改我已经为你重写了它，我也测试了它。这假设你正在使用MySQLi

这使用预备语句，使其更安全。点击此处查看更多信息http://mattbango.com/notebook/code/prepared-statements-in-php-and-mysqli/

在SELECT语句中，你可以放置你想要的任何表，但其余的表应该很好。

<html> <head> </head> <body> <form method="post" action="testing.php"> <select name="month" id="month"> <option></option> <option value="1">January</option> <option value="2">February</option> <option value="3">March</option> <option value="4">April</option> <option value="5">May</option> <option value="6">June</option> <option value="7">July</option> <option value="8">August</option> <option value="9">September</option> <option value="10">October</option> <option value="11">November</option> <option value="12">December</option> </select> <input type="submit" value="submit" name="submit"/> </form> </body> </html> <?php // Include connection file here and replace these variables $hostname="localhost"; $username="username"; $password="password"; $dbname="dbasename"; /* Create a new mysqli object with database connection parameters */ $db = new mysqli($hostname, $username, $password, $dbname); // Create statement object $stmt = $db->stmt_init(); // Create a prepared statement if($stmt->prepare("SELECT name, month, blah FROM test WHERE MONTH(month) = ?")) { // Bind your variable to replace the ? if(!$stmt->bind_param('s', $month)) { //if BIND fails, display an error printf("Errormessage: %s\n", $stmt->error); } // escape the POST data for added protection $month = isset($_POST['month']) ? $db->real_escape_string($_POST['month']) : ''; // Execute query if(!$stmt->execute()) { printf("Errormessage: %s\n", $stmt->error); } // Bind your result columns to variables if(!$stmt->bind_result($name, $url, $logo)) { printf("Errormessage: %s\n", $stmt->error); } // Fetch the result of the query while($stmt->fetch()) { echo $name; } // Close statement object $stmt->close(); } ?>

如何通过下载php中的月份搜索数据库

1 个答案: