我一直在使用mysql并且它做了我想要的,但随着我的项目越来越大,我决定选择mysqli。
我查看了enter link description here的教程,这个教程非常直接,直到我要显示一些数据为止
存储过程(connect.php)
<?php
function db_connect() {
// Define connection as a static variable, to avoid connecting more than once
static $con;
// Try and connect to the database, if a connection has not been established yet
if(!isset($con)) {
// Load configuration as an array. Use the actual location of your configuration file
$config = parse_ini_file('config.ini');
$con = mysqli_connect('localhost',$config['username'],$config['password'],$config['dbname']);
}
// If connection was not successful, handle the error
if( $con === false) {
// Handle error - notify administrator, log to a file, show an error screen, etc.
return mysqli_connect_error();
}
return $con;
}
function db_query($query) {
// Connect to the database
$con = db_connect();
// Query the database
$result = mysqli_query( $con,$query);
return $result;
}
function db_error() {
$con = db_connect();
return mysqli_error($con);
}
function db_select($query) {
$rows = array();
$result = db_query($query);
// If query failed, return `false`
if($result === false) {
return false;
}
// If query was successful, retrieve all the rows into an array
while ($row = mysqli_fetch_assoc($result)) {
$rows[] = $row;
}
return $rows;
}
function db_quote($value) {
$con = db_connect();
return "'" . mysqli_real_escape_string($con,$value) . "'";
}
?>
的PHP / HTML
<div class="grid_4">
<div class="left-1">
<h2 class="top-1 p3">Find a property</h2>
<form id="form-1" method="post" class="form-1 bot-1" action="prop_result.php">
<div class="select-1">
<label>Select Area</label>
<select name="field4" id="field4" >
<?php
$rows = db_select("SELECT id,city_id,area FROM area");
if($rows === false) {
$error = db_error();
}else
{
while($rows=mysqli_fetch_assoc($result))
{
?>
<option value=""><?php $rows['
area'];?></option>
<?php
}}
?>
</select>
</div>
我不明白如何在while循环中使用存储过程,因此它将输出字段ID和Area中的数据,以便根据查询正确填充我的选择框和任何其他输入
当前
我尝试过不同的方法:
<?php
$rows = db_select("SELECT id,city_id,area FROM area");
if($rows === false) {
$error = db_error();
}
while($rows=mysqli_fetch_assoc($result))
{
?>
<option value=""><?php $rows['
area'];?></option>
<?php
}
?>
和
$rows = db_select("SELECT id,city_id,area FROM area");
if($rows === false) {
$error = db_error();
}
{
?>
<option value=""><?php $rows['
area'];?></option>
<?php
}
?>
和
<?php
$rows = db_select("SELECT area_id from property");
if($rows === false) {
$error = db_error();
}
{
echo "<option value='".$rows['id']."'>".$rows[$col4]."</option>";
}
?>
这些都不会输出任何数据。回显$行不会产生任何数据。我不知道使用存储过程显示输出的逻辑是什么。
如果需要任何其他信息来帮助解决此问题,我们将不胜感激,请告知我们。
答案 0 :(得分:1)
很高兴听到数据正在返回。试试这个尺寸...
foreach($rows as $key => $value){
foreach($value as $k => $v){
if($k == 'id'){
$newID = $v;
}
if($k == 'type'){
$newType = $v
}
}
echo "<option value='".$newID."'>".$newType."</option>";
}
有了这个,你应该能够让它适合你。
编辑:直到稍后才看到其他数组......嵌套循环应该更适合你。
答案 1 :(得分:0)
Siniseus方式可行,但其代码太多,无法执行简单的任务。我确实使用它来最终来到这个
<select name="field4" id="field4" >
<?php
$rows = db_select("SELECT id, city_id,area FROM area");
foreach($rows as $row){
echo "<option value='".$row['id']."'>".$row['area']."</option>";
}
?>
</select>
简单,干净,非常直接,没有太多变数。
$ rows = db_select(“Select Query”)foreach($ rows as $ row){ 做这个 }