Php 如何查看自动递增字段的上次插入值
在我的数据库中,有一个名为Php 如何查看自动递增字段的上次插入值,php,mysql,auto-increment,Php,Mysql,Auto Increment,在我的数据库中,有一个名为spaj_per的字段作为自动递增主键 如何在字段spaj\u per中显示最近插入的值。我试过这个 <?php $con = mysql_connect("localhost", "SuperAdmin", "***"); if (!$con) { die('Could not connect: ' . mysql_error()); } $db_selected = mysql_select_db("siste
spaj_per
的字段作为自动递增主键
如何在字段spaj\u per
中显示最近插入的值。我试过这个
<?php
$con = mysql_connect("localhost", "SuperAdmin", "***");
if (!$con) {
die('Could not connect: ' . mysql_error());
}
$db_selected = mysql_select_db("sistem_pengurusan_fail",$con);
$q = "SELECT MAX(id) AS spaj_per FROM unit_pengambilan";
$result = mysql_query($q);
$row = mysql_fetch_array($result);
?>
<?php echo $row['spaj_per']; ?>
但是它不会工作。使用PHP的
mysql\u insert\u id()
函数
SELECT id FROM mytable ORDER BY id DESC LIMIT 1;
或者
$last_id = mysql_insert_id();
试试这个
$q = "SELECT MAX(spaj_per) AS spaj_per FROM unit_pengambilan";
$result =mysql_query($q);
$row = mysql_fetch_row($result);
echo $row[0];
试一试
试试下面的方法
<?
$q = "SELECT MAX(spaj_per) AS last_spaj_per FROM unit_pengambilan";
$result =mysql_query($q);
$row = mysql_fetch_array($result);
echo $row['last_spaj_per'];
?>
$row=mysql\u fetch\u数组($result)代码>更改为$row=mysql\u fetch\u assoc($result)编码>并重试您收到的实际错误消息是否为“无法工作”?重复
<?
$q = "SELECT MAX(spaj_per) AS last_spaj_per FROM unit_pengambilan";
$result =mysql_query($q);
$row = mysql_fetch_array($result);
echo $row['last_spaj_per'];
?>