搜索
首页php教程php手册分享10段PHP常用代码,分享10段php

分享10段PHP常用代码,分享10段php

本文汇集PHP开发中经常用到的十段代码,包括Email、64位编码和解码、解压缩、64位编码、解析JSON等,希望对您有所帮助。

1、使用PHP Mail函数发送Email

$to = "viralpatel.net@gmail.com"; 
$subject = "VIRALPATEL.net"; 
$body = "Body of your message here you can use HTML too. e.g. ﹤br﹥ ﹤b﹥ Bold ﹤/b﹥"; 
$headers = "From: Peter\r\n"; 
$headers .= "Reply-To: info@yoursite.com\r\n"; 
$headers .= "Return-Path: info@yoursite.com\r\n"; 
$headers .= "X-Mailer: PHP5\n"; 
$headers .= 'MIME-Version: 1.0' . "\n"; 
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n"; 
mail($to,$subject,$body,$headers); 
?﹥

2、PHP中的64位编码和解码

function base64url_encode($plainText) {
$base64 = base64_encode($plainText);
$base64url = strtr($base64, '+/=', '-_,');
return $base64url;
}
function base64url_decode($plainText) {
$base64url = strtr($plainText, '-_,', '+/=');
$base64 = base64_decode($base64url);
return $base64;
} 

3、获取远程IP地址

function getRealIPAddr()
{
if (!empty($_SERVER['HTTP_CLIENT_IP'])) //check ip from share internet
{
$ip=$_SERVER['HTTP_CLIENT_IP'];
}
elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) //to check ip is pass from proxy
{
$ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
}
else
{
$ip=$_SERVER['REMOTE_ADDR'];
}
return $ip;
}

4、 日期格式化

function checkDateFormat($date)
{
//match the format of the date
if (preg_match ("/^([0-9]{4})-([0-9]{2})-([0-9]{2})$/", $date, $parts))
{
//check weather the date is valid of not
if(checkdate($parts[2],$parts[3],$parts[1]))
return true;
else
return false;
}
else
return false;
}

5、验证Email

$email = $_POST['email'];
if(preg_match("~([a-zA-Z0-9!#$%&'*+-/=?^_`{|}~])@([a-zA-Z0-9-]).
   ([a-zA-Z0-9]{2,4})~",$email)) {
echo 'This is a valid email.';
} else{
echo 'This is an invalid email.';
}

6、在PHP中轻松解析XML

//this is a sample xml string
$xml_string="﹤?xml version='1.0'?﹥
﹤moleculedb﹥
 ﹤molecule name='Benzine'﹥
 ﹤symbol﹥ben﹤/symbol﹥
 ﹤code﹥A﹤/code﹥
 ﹤/molecule﹥
 ﹤molecule name='Water'﹥
 ﹤symbol﹥h2o﹤/symbol﹥
 ﹤code﹥K﹤/code﹥
 ﹤/molecule﹥
﹤/moleculedb﹥";
//load the xml string using simplexml function
$xml = simplexml_load_string($xml_string);
//loop through the each node of molecule
foreach ($xml-﹥molecule as $record)
{
 //attribute are accessted by
 echo $record['name'], ' ';
 //node are accessted by -﹥ operator
 echo $record-﹥symbol, ' ';
 echo $record-﹥code, '﹤br /﹥';
}

7、数据库连接

﹤?php
if(basename(__FILE__) == basename($_SERVER['PHP_SELF'])) send_404();
$dbHost = "localhost"; //Location Of Database usually its localhost
$dbUser = "xxxx"; //Database User Name
$dbPass = "xxxx"; //Database Password
$dbDatabase = "xxxx"; //Database Name
$db = mysql_connect("$dbHost", "$dbUser", "$dbPass") or 
   die ("Error connecting to database.");
mysql_select_db("$dbDatabase", $db) or die ("Couldn't select the database.");
# This function will send an imitation 404 page if the user
# types in this files filename into the address bar.
# only files connecting with in the same directory as this
# file will be able to use it as well.
function send_404()
{
 header('HTTP/1.x 404 Not Found');
 print '﹤!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"﹥'."n".
 '﹤html﹥﹤head﹥'."n".
 '﹤title﹥404 Not Found﹤/title﹥'."n".
 '﹤/head﹥﹤body﹥'."n".
 '﹤h1﹥Not Found﹤/h1﹥'."n".
 '﹤p﹥The requested URL '.
 str_replace(strstr($_SERVER['REQUEST_URI'], '?'), '', $_SERVER['REQUEST_URI']).
 ' was not found on this server.﹤/p﹥'."n".
 '﹤/body﹥﹤/html﹥'."n";
 exit;
}
# In any file you want to connect to the database,
# and in this case we will name this file db.php
# just add this line of php code (without the pound sign):
# include"db.php";
?﹥

8、创建和解析JSON数据

$json_data = array ('id'=﹥1,'name'=﹥"rolf",'country'=﹥'russia',
"office"=﹥array("google","oracle"));
echo json_encode($json_data);

9、处理MySQL时间戳

$query = "select UNIX_TIMESTAMP(date_field) as mydate 
 from mytable where 1=1";
$records = mysql_query($query) or die(mysql_error());
while($row = mysql_fetch_array($records))
{
echo $row;
}

10、解压缩Zip文件

﹤?php
 function unzip($location,$newLocation){
 if(exec("unzip $location",$arr)){
 mkdir($newLocation);
 for($i = 1;$i﹤ count($arr);$i++){
 $file = trim(preg_replace("~inflating: ~","",$arr[$i]));
 copy($location.'/'.$file,$newLocation.'/'.$file);
 unlink($location.'/'.$file);
 }
 return TRUE;
 }else{
 return FALSE;
 }
 }
?﹥
//Use the code as following:
﹤?php
include 'functions.php';
if(unzip('zipedfiles/test.zip','unziped/myNewZip'))
 echo 'Success!';
else
 echo 'Error';
?﹥

PHP常用功能如下

1.PHP字符串

字符串声明 变量=''或者""(一般情况会使用单引号,因为写起来会比较方便)

$str = 'Hello PHP';
echo $str;

strpos 计算字符在字符串中的位置(从0开始)

$str = 'Hello PHP';
echo strpos($str,'o');  //计算字符在字符串中的位置
echo '
';
echo strpos($str,'PH');

substr 截取字符串

$str = 'Hello PHP';
//截取字符串
$str1 = substr($str,2,3); //从2位置开始截取,截取长度为3的字符串
echo $str1;

不传入长度参数的话,会从指定位置一直截取到字符串的末尾

str_split 分割字符串  固定长度的分割(默认长度为1)

$str = 'Hello PHP';
//分割字符串
$result = str_split($str); //将结果保存到一个数组中
print_r($result); //使用print_r输入一个数组
echo '<br/>';
$result1 = str_split($str,2);
print_r($result1);

explode(分割字符,待分割的字符串) 按照空格进行分割

$str = 'Hello PHP Java C# C++';
$result = explode(' ',$str);
print_r($result);

字符串的连接

$str = 'Hello PHP Java C# C++';
//字符串的连接
$num = 100;
$str1 = $str.'<br/>Objective-C '.$num;
echo $str1;
echo '<br/>';
$str2 = "$str<br/>Objective-C $num"; //另一中简便的写法
echo $str2;
声明
本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系admin@php.cn

热AI工具

Undresser.AI Undress

Undresser.AI Undress

人工智能驱动的应用程序,用于创建逼真的裸体照片

AI Clothes Remover

AI Clothes Remover

用于从照片中去除衣服的在线人工智能工具。

Undress AI Tool

Undress AI Tool

免费脱衣服图片

Clothoff.io

Clothoff.io

AI脱衣机

Video Face Swap

Video Face Swap

使用我们完全免费的人工智能换脸工具轻松在任何视频中换脸!

热工具

螳螂BT

螳螂BT

Mantis是一个易于部署的基于Web的缺陷跟踪工具,用于帮助产品缺陷跟踪。它需要PHP、MySQL和一个Web服务器。请查看我们的演示和托管服务。

EditPlus 中文破解版

EditPlus 中文破解版

体积小,语法高亮,不支持代码提示功能

SublimeText3 英文版

SublimeText3 英文版

推荐:为Win版本,支持代码提示!

SublimeText3 Linux新版

SublimeText3 Linux新版

SublimeText3 Linux最新版

记事本++7.3.1

记事本++7.3.1

好用且免费的代码编辑器