PHP实现搜索功能
写在前面
‘’ php5与php7使用MySQL时有mysql和mysqli的区别，参数位置的变化；在不在同一页面主要取决于结果页面是否有搜索页面的代码
PHP7
搜索页面与结果在同一页面
前端
index.html
<!DOCTYPE html>
<html>
<head>
<title>收录系统</title>
<meta charset="utf-8">
</head>
<body>
<h1>搜索</h1><br/>
<form action="search.php" method="post">
收录内容：<input type="text" name="keywords" placeholder="搜索不到？可能还没被收录哦~">
<input type="submit" values="搜索">
</form>
</body>
</html>
数据库
config.php
<?php
$conn=mysqli_connect("IP","username","password");
if(!$conn){
echo "连接数据库失败！";
}else{
mysqli_select_db($conn,"database");
mysqli_query($conn,"set names utf8");
}
结果
search.php
<?php
require("config.php");
$keywords=$_POST['keywords'];
$sql="select * from ceshis where name like '%".$keywords."%'";
$result=mysqli_query($conn,$sql);
if(!$result){
die('无法读取数据,请联系管理员修复:'.mysqli_error($conn));
}
echo "<h1>搜索</h1><br/>
<form action='search.php' method='post'>
收录内容：<input type='text' name='keywords' placeholder='搜索不到？可能还没被收录哦~'>
<input type='submit' values='搜索'>
</form>";
echo "<h2>Mysql where</h2>";
echo "<table border='1'><tr><td>name</td><td>mail</td></tr>";
while($row=mysqli_fetch_array($result)){
echo "<tr>";
echo "<td>{$row['name']}</td>";
echo "<td>{$row['mail']}</td>";
echo "</tr>";
}
echo "</table>";
mysqli_close($conn);
?>
搜索页面与结果不在同一页面
前端
index.html
<!DOCTYPE html>
<html>
<head>
<title>收录系统</title>
<meta charset="utf-8">
</head>
<body>
<h1>搜索</h1><br/>
<form action="search.php" method="post">
收录内容：<input type="text" name="keywords" placeholder="搜索不到？可能还没被收录哦~">
<input type="submit" values="搜索">
</form>
</body>
</html>
数据库
config.php
<?php
$conn=mysqli_connect("IP","username","password");
if(!$conn){
echo "连接数据库失败！";
}else{
mysqli_select_db($conn,"database");
mysqli_query($conn,"set names utf8");
}
结果
search.php
<?php
require("config.php");
$keywords=$_POST['keywords'];
$sql="select * from ceshis where name like '%".$keywords."%'";
$result=mysqli_query($conn,$sql);
if(!$result){
die('无法读取数据,请联系管理员修复:'.mysqli_error($conn));
}
echo "<h2>Mysql where</h2>";
echo "<table border='1'><tr><td>name</td><td>mail</td></tr>";
while($row=mysqli_fetch_array($result)){
echo "<tr>";
echo "<td>{$row['name']}</td>";
echo "<td>{$row['mail']}</td>";
echo "</tr>";
}
echo "</table>";
mysqli_close($conn);
?>
PHP5
搜索页面与结果在同一页面
前端
index.html
<!DOCTYPE html>
<html>
<head>
<title>收录系统</title>
<meta charset="utf-8">
</head>
<body>
<h1>搜索</h1><br/>
<form action="search.php" method="post">
收录内容：<input type="text" name="keywords" placeholder="搜索不到？可能还没被收录哦~">
<input type="submit" values="搜索">
</form>
</body>
</html>
数据库
config.php
<?php
$conn=mysqli_connect("IP","username","password");
if(!$conn){
echo "连接数据库失败！";
}else{
mysql_select_db("database"，$conn);
mysql_query("set names utf8"，$conn);
}
结果
search.php
<?php
require("config.php");
$keywords=$_POST['keywords'];
$sql="select * from ceshis where name like '%".$keywords."%'";
$result=mysql_query($sql,$conn);
if(!$result){
die('无法读取数据,请联系管理员修复:'.mysqli_error($conn));
}
echo "<h1>搜索</h1><br/>
<form action='search.php' method='post'>
收录内容：<input type='text' name='keywords' placeholder='搜索不到？可能还没被收录哦~'>
<input type='submit' values='搜索'>
</form>";
echo "<h2>Mysql where</h2>";
echo "<table border='1'><tr><td>name</td><td>mail</td></tr>";
while($row=mysql_fetch_array($result)){
echo "<tr>";
echo "<td>{$row['name']}</td>";
echo "<td>{$row['mail']}</td>";
echo "</tr>";
}
echo "</table>";
mysql_close($conn);
?>
搜索页面与结果不在同一页面
前端
index.html
<!DOCTYPE html>
<html>
<head>
<title>收录系统</title>
<meta charset="utf-8">
</head>
<body>
<h1>搜索</h1><br/>
<form action="search.php" method="post">
收录内容：<input type="text" name="keywords" placeholder="搜索不到？可能还没被收录哦~">
<input type="submit" values="搜索">
</form>
</body>
</html>
数据库
config.php
<?php
$conn=mysqli_connect("IP","username","password");
if(!$conn){
echo "连接数据库失败！";
}else{
mysql_select_db("database"，$conn);
mysql_query("set names utf8"，$conn);
}
结果
search.php
<?php
require("config.php");
$keywords=$_POST['keywords'];
$sql="select * from ceshis where name like '%".$keywords."%'";
$result=mysql_query($sql,$conn);
if(!$result){
die('无法读取数据,请联系管理员修复:'.mysqli_error($conn));
}
echo "<h2>Mysql where</h2>";
echo "<table border='1'><tr><td>name</td><td>mail</td></tr>";
while($row=mysql_fetch_array($result)){
echo "<tr>";
echo "<td>{$row['name']}</td>";
echo "<td>{$row['mail']}</td>";
echo "</tr>";
}
echo "</table>";
mysql_close($conn);
?>