CentOS下用yum配置php+mysql+apache(LAMP)
#安装需要的包,有依赖关系,自动帮你解决 yum install httpd mysql mysql-server php php-gd php-mbstring php-mysql #启动httpd service httpd start #设为开机启动 chkconfig httpd on #启动mysqld service mysqld start #设为开机启动 chkconfig mysqld on #在根目录下创建一个测试文件,写个phpinfo函数 vi /var/www/html/phpinfo.php
打开浏览器,输入http://ip/phpinfo.php,就可以看到phpinfo的输出页面了
phpinfo.php
<? phpinfo(); ?>
例子1:
表单处理(get)
welcome_get.html
<html> <body> <form action="welcome_get.php" method="get"> Name: <input type="text" name="name"><br> E-mail: <input type="text" name="email"><br> <input type="submit"> </form> </body> </html>
welcome_get.php
<html> <body> Welcome <?php echo $_GET["name"]; ?><br> Your email address is: <?php echo $_GET["email"]; ?> </body> </html>
例子2:
表单处理(post)
welcome.html
<html> <body> <form action="welcome.php" method="post"> Name: <input type="text" name="name"><br> E-mail: <input type="text" name="email"><br> <input type="submit"> </form> </body> </html>
welcome.php
<html> <body> Welcome <?php echo $_POST["name"]; ?><br> Your email address is: <?php echo $_POST["email"]; ?> </body> </html>
例子3:
表单验证
<!DOCTYPE HTML>
<html>
<head>
</head>
<body>
<?php
// define variables and set to empty values
$name = $email = $gender = $comment = $website = "";
if ($_SERVER["REQUEST_METHOD"] == "POST") {
$name = test_input($_POST["name"]);
$email = test_input($_POST["email"]);
$website = test_input($_POST["website"]);
$comment = test_input($_POST["comment"]);
$gender = test_input($_POST["gender"]);
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
?>
<h2>PHP 验证实例</h2>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
姓名:<input type="text" name="name">
<br><br>
电邮:<input type="text" name="email">
<br><br>
网址:<input type="text" name="website">
<br><br>
评论:<textarea name="></textarea>
<br><br>
性别:
<input type="radio" name="gender" value="female">女性
<input type="radio" name="gender" value="male">男性
<br><br>
<input type="submit" name="submit" value="提交">
</form>
<?php
echo "<h2>您的输入:</h2>";
echo $name;
echo "<br>";
echo $email;
echo "<br>";
echo $website;
echo "<br>";
echo $comment;
echo "<br>";
echo $gender;
?>
</body>
</html>
例子4:
表单验证+必填字段:
<!DOCTYPE HTML>
<html>
<head>
<style>
.error {color: #FF0000;}
</style>
</head>
<body>
<?php
// 定义变量并设置为空值
$nameErr = $emailErr = $genderErr = $websiteErr = "";
$name = $email = $gender = $comment = $website = "";
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (empty($_POST["name"])) {
$nameErr = "姓名是必填的";
} else {
$name = test_input($_POST["name"]);
}
if (empty($_POST["email"])) {
$emailErr = "电邮是必填的";
} else {
$email = test_input($_POST["email"]);
}
if (empty($_POST["website"])) {
$website = "";
} else {
$website = test_input($_POST["website"]);
}
if (empty($_POST["comment"])) {
$comment = "";
} else {
$comment = test_input($_POST["comment"]);
}
if (empty($_POST["gender"])) {
$genderErr = "性别是必选的";
} else {
$gender = test_input($_POST["gender"]);
}
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
?>
<h2>PHP 验证实例</h2>
<p><span class="error">* 必需的字段</span></p>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
姓名:<input type="text" name="name">
<span class="error">* <?php echo $nameErr;?></span>
<br><br>
电邮:<input type="text" name="email">
<span class="error">* <?php echo $emailErr;?></span>
<br><br>
网址:<input type="text" name="website">
<span class="error"><?php echo $websiteErr;?></span>
<br><br>
评论:<textarea name="></textarea>
<br><br>
性别:
<input type="radio" name="gender" value="female">女性
<input type="radio" name="gender" value="male">男性
<span class="error">* <?php echo $genderErr;?></span>
<br><br>
<input type="submit" name="submit" value="提交">
</form>
<?php
echo "<h2>您的输入:</h2>";
echo $name;
echo "<br>";
echo $email;
echo "<br>";
echo $website;
echo "<br>";
echo $comment;
echo "<br>";
echo $gender;
?>
</body>
</html>
例子5:
表单验证+必填字段+正则表达式验证:
<!DOCTYPE HTML>
<html>
<head>
<style>
.error {color: #FF0000;}
</style>
</head>
<body>
<?php
// 定义变量并设置为空值
$nameErr = $emailErr = $genderErr = $websiteErr = "";
$name = $email = $gender = $comment = $website = "";
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (empty($_POST["name"])) {
$nameErr = "姓名是必填的";
} else {
$name = test_input($_POST["name"]);
// 检查姓名是否包含字母和空白字符
if (!preg_match("/^[a-zA-Z ]*$/",$name)) {
$nameErr = "只允许字母和空格";
}
}
if (empty($_POST["email"])) {
$emailErr = "电邮是必填的";
} else {
$email = test_input($_POST["email"]);
// 检查电子邮件地址语法是否有效
if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$email)) {
$emailErr = "无效的 email 格式";
}
}
if (empty($_POST["website"])) {
$website = "";
} else {
$website = test_input($_POST["website"]);
// 检查 URL 地址语法是否有效(正则表达式也允许 URL 中的斜杠)
if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) {
$websiteErr = "无效的 URL";
}
}
if (empty($_POST["comment"])) {
$comment = "";
} else {
$comment = test_input($_POST["comment"]);
}
if (empty($_POST["gender"])) {
$genderErr = "性别是必选的";
} else {
$gender = test_input($_POST["gender"]);
}
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
?>
<h2>PHP 验证实例</h2>
<p><span class="error">* 必需的字段</span></p>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
姓名:<input type="text" name="name">
<span class="error">* <?php echo $nameErr;?></span>
<br><br>
电邮:<input type="text" name="email">
<span class="error">* <?php echo $emailErr;?></span>
<br><br>
网址:<input type="text" name="website">
<span class="error"><?php echo $websiteErr;?></span>
<br><br>
评论:<textarea name="></textarea>
<br><br>
性别:
<input type="radio" name="gender" value="female">女性
<input type="radio" name="gender" value="male">男性
<span class="error">* <?php echo $genderErr;?></span>
<br><br>
<input type="submit" name="submit" value="提交">
</form>
<?php
echo "<h2>您的输入:</h2>";
echo $name;
echo "<br>";
echo $email;
echo "<br>";
echo $website;
echo "<br>";
echo $comment;
echo "<br>";
echo $gender;
?>
</body>
</html>
例子6:
表单完整版本
<!DOCTYPE HTML>
<html>
<head>
<style>
.error {color: #FF0000;}
</style>
</head>
<body>
<?php
// 定义变量并设置为空值
$nameErr = $emailErr = $genderErr = $websiteErr = "";
$name = $email = $gender = $comment = $website = "";
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (empty($_POST["name"])) {
$nameErr = "姓名是必填的";
} else {
$name = test_input($_POST["name"]);
// 检查姓名是否包含字母和空白字符
if (!preg_match("/^[a-zA-Z ]*$/",$name)) {
$nameErr = "只允许字母和空格";
}
}
if (empty($_POST["email"])) {
$emailErr = "电邮是必填的";
} else {
$email = test_input($_POST["email"]);
// 检查电子邮件地址语法是否有效
if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$email)) {
$emailErr = "无效的 email 格式";
}
}
if (empty($_POST["website"])) {
$website = "";
} else {
$website = test_input($_POST["website"]);
// 检查 URL 地址语法是否有效(正则表达式也允许 URL 中的斜杠)
if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) {
$websiteErr = "无效的 URL";
}
}
if (empty($_POST["comment"])) {
$comment = "";
} else {
$comment = test_input($_POST["comment"]);
}
if (empty($_POST["gender"])) {
$genderErr = "性别是必选的";
} else {
$gender = test_input($_POST["gender"]);
}
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
?>
<h2>PHP 验证实例</h2>
<p><span class="error">* 必需的字段</span></p>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
姓名:<input type="text" name="name">
<span class="error">* <?php echo $nameErr;?></span>
<br><br>
电邮:<input type="text" name="email">
<span class="error">* <?php echo $emailErr;?></span>
<br><br>
网址:<input type="text" name="website">
<span class="error"><?php echo $websiteErr;?></span>
<br><br>
评论:<textarea name="></textarea>
<br><br>
性别:
<input type="radio" name="gender" value="female">女性
<input type="radio" name="gender" value="male">男性
<span class="error">* <?php echo $genderErr;?></span>
<br><br>
<input type="submit" name="submit" value="提交">
</form>
<?php
echo "<h2>您的输入:</h2>";
echo $name;
echo "<br>";
echo $email;
echo "<br>";
echo $website;
echo "<br>";
echo $comment;
echo "<br>";
echo $gender;
?>
</body>
</html>
例子7:
连接mysql并且输出数据:
<?php
$conn=mysql_connect("localhost:3306", "root", "zhenchaowen");
mysql_query("set names 'utf8'");
if(!$conn){
die("could not connect to the database:</br>".mysql_error());//诊断连接错误
}
$result=mysql_db_query("testdb001", "SELECT * FROM `customers`", $conn);
// 获取查询结果
$row=mysql_fetch_row($result);
echo '<font face="verdana">';
echo '<table border="1" cellpadding="1" cellspacing="2">';
// 显示字段名称
echo "</b><tr></b>";
; $i<mysql_num_fields($result); $i++)
{
echo '<td bgcolor="#000F00"><b>'.
mysql_field_name($result, $i);
echo "</b></td></b>";
}
echo "</tr></b>";
// 定位到第一条记录
mysql_data_seek($result, );
// 循环取出记录
while ($row=mysql_fetch_row($result))
{
echo "<tr></b>";
; $i<mysql_num_fields($result); $i++ )
{
echo '<td bgcolor="#00FF00">';
echo $row[$i];
echo '</td>';
}
echo "</tr></b>";
}
echo "</table></b>";
echo "</font>";
// 释放资源
mysql_free_result($result);
// 关闭连接
mysql_close($conn);
?>
创建插入数据
<html> <body> <form action="insert.php" method="post"> Firstname: <input type="text" name="firstname" /> Lastname: <input type="text" name="lastname" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> </body> </html>
<?php
$con = mysql_connect("localhost:3306", "root", "zhenchaowen");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("testdb001", $con);
$sql="INSERT INTO Persons (FirstName, LastName, Age)
VALUES
('$_POST[firstname]','$_POST[lastname]','$_POST[age]')";
if (!mysql_query($sql,$con))
{
die('Error: ' . mysql_error());
}
echo "1 record added";
mysql_close($con)
?>
删除数据
<?php
$con = mysql_connect("localhost:3306", "root", "zhenchaowen");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("testdb001", $con);
mysql_query("DELETE FROM Persons WHERE LastName='Griffin'");
mysql_close($con);
?>
更新数据
<?php
$con = mysql_connect("localhost:3306", "root", "zhenchaowen");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("testdb001", $con);
mysql_query("UPDATE Persons SET Age = '36'
WHERE FirstName = 'Peter' AND LastName = 'Griffin'");
mysql_close($con);
?>
备注:测试前先检查下mysql连接设置:
/usr/bin/mysql -u root -p
例子8:(cookie处理)
创建cookie
<?php setcookie(); ?> <html> <body> </body> </html>
获取cookie
<?php // Print a cookie echo $_COOKIE["user"]; // A way to view all cookies print_r($_COOKIE); ?>
<html> <body> <?php if (isset($_COOKIE["user"])) echo "Welcome " . $_COOKIE["user"] . "!<br />"; else echo "Welcome guest!<br />"; ?> </body> </html>
删除cookie
<?php // set the expiration date to one hour ago setcookie(); ?>
例子9:(session处理)
开始session和存储session
<?php session_start(); // store session data $_SESSION[; ?> <html> <body> <?php //retrieve session data echo "Pageviews=". $_SESSION['views']; ?> </body> </html>
输出session中的数据
<?php session_start(); if(isset($_SESSION['views'])) $_SESSION[; else $_SESSION[; echo "Views=". $_SESSION['views']; ?>
终结session
<?php session_destroy(); ?>
例子10:(文件上传)
<html> <body> <form action="upload_file.php" method="post" enctype="multipart/form-data"> <label for="file">Filename:</label> <input type="file" name="file" id="file" /> <br /> <input type="submit" name="submit" value="Submit" /> </form> </body> </html>
<?php
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/pjpeg"))
&& ($_FILES[))
{
)
{
echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
}
else
{
echo "Upload: " . $_FILES["file"]["name"] . "<br />";
echo "Type: " . $_FILES["file"]["type"] . "<br />";
echo ) . " Kb<br />";
echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";
if (file_exists("upload/" . $_FILES["file"]["name"]))
{
echo $_FILES["file"]["name"] . " already exists. ";
}
else
{
move_uploaded_file($_FILES["file"]["tmp_name"],
"upload/" . $_FILES["file"]["name"]);
echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
}
}
}
else
{
echo "Invalid file";
}
?>
11.写文件:
<?php
$myfile = fopen("newfile.txt", "w") or die("Unable to open file!");
$txt = "Bill Gates\n";
fwrite($myfile, $txt);
$txt = "Steve Jobs\n";
fwrite($myfile, $txt);
fclose($myfile);
?>
12.文件读取:
<!DOCTYPE html>
<html>
<body>
<?php
$myfile = fopen("upload/newfile.txt", "r") or die("Unable to open file!");
echo fread($myfile,filesize("newfile.txt"));
fclose($myfile);
?>
</body>
</html>
13.xml处理
13.1
<?xml version="1.0" encoding="ISO-8859-1"?> <note> <to>George</to> <from>John</from> <heading>Reminder</heading> <body>Don't forget the meeting!</body> </note>
<?php
//Initialize the XML parser
$parser=xml_parser_create();
//Function to use at the start of an element
function start($parser,$element_name,$element_attrs)
{
switch($element_name)
{
case "NOTE":
echo "-- Note --<br />";
break;
case "TO":
echo "To: ";
break;
case "FROM":
echo "From: ";
break;
case "HEADING":
echo "Heading: ";
break;
case "BODY":
echo "Message: ";
}
}
//Function to use at the end of an element
function stop($parser,$element_name)
{
echo "<br />";
}
//Function to use when finding character data
function char($parser,$data)
{
echo $data;
}
//Specify element handler
xml_set_element_handler($parser,"start","stop");
//Specify data handler
xml_set_character_data_handler($parser,"char");
//Open XML file
$fp=fopen("test.xml","r");
//Read data
))
{
xml_parse($parser,$data,feof($fp)) or
die (sprintf("XML Error: %s at line %d",
xml_error_string(xml_get_error_code($parser)),
xml_get_current_line_number($parser)));
}
//Free the XML parser
xml_parser_free($parser);
?>
13.2
<?xml version="1.0" encoding="ISO-8859-1"?> <note> <to>George</to> <from>John</from> <heading>Reminder</heading> <body>Don't forget the meeting!</body> </note>
<?php
$xmlDoc = new DOMDocument();
$xmlDoc->load("note.xml");
$x = $xmlDoc->documentElement;
foreach ($x->childNodes AS $item)
{
print $item->nodeName . " = " . $item->nodeValue . "<br />";
}
?>
13.3
<?xml version="1.0" encoding="ISO-8859-1"?> <note> <to>George</to> <from>John</from> <heading>Reminder</heading> <body>Don't forget the meeting!</body> </note>
<?php
$xml = simplexml_load_file("test2.xml");
echo $xml->getName() . "<br />";
foreach($xml->children() as $child)
{
echo $child->getName() . ": " . $child . "<br />";
}
?>
查看host绑定:
mysql> SELECT User, Host, Password FROM mysql.user; +-------------+-----------------------+-------------------------------------------+ | User | Host | Password | +-------------+-----------------------+-------------------------------------------+ | root | localhost | *232BC6F0ED82F0AD17B03A53D4062D2951F1A1E4 | | root | localhost.localdomain | *232BC6F0ED82F0AD17B03A53D4062D2951F1A1E4 | | root | 127.0.0.1 | *232BC6F0ED82F0AD17B03A53D4062D2951F1A1E4 | | demouser | localhost | *0756A562377EDF6ED3AC45A00B356AAE6D3C6BB6 | | zhenchaowen | 192.168.1.105 | *232BC6F0ED82F0AD17B03A53D4062D2951F1A1E4 | +-------------+-----------------------+-------------------------------------------+ rows in set (0.01 sec) mysql>
php解析器测试:
[root@localhost cgi-bin]# php hello3.php PHP Deprecated: Comments starting with PHP Warning: Directive <font face=</td><td bgcolor=</td><td bgcolor="#00FF00">ddd</td><td bgcolor="#00FF00">dddd</td></tr></b></table></b></font>
经过上述的步骤,传说中的LAMP架构就这样搭建完成了
顺便提下
yum install httpd
安装的httpd配置在/etc/httpd/conf/httpd.conf 中
如:
ServerName localhost:80
Listen 192.168.1.112:80
另外学一门语言总得把相关的框架给玩一下:
yii为例子(yii的官网:https://github.com/yiisoft/yii):
执行以下命令:
mkdir YiiPath cd YiiPath/ git clone https://github.com/yiisoft/yii.git
然后就可以看到如此美丽的配置页面了

CI框架为例子(官网:http://codeigniter.org.cn/):
wget https://codeload.github.com/bcit-ci/CodeIgniter/zip/3.0.0 unzip
然后就也可以看到如此美丽的配置页面了
http://192.168.1.112/CodeIgniter-3.0.0/

或者到github上面去找(https://github.com/bcit-ci/CodeIgniter)
mkdir ci cd ci/ git clone https://github.com/bcit-ci/CodeIgniter.git

http://192.168.1.112/ci/CodeIgniter/
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