在编写代码的时候有个神奇的工具总是好的!下面这里收集了 40+ PHP 代码片段,可以帮助你开发 PHP 项目。
这些 PHP 片段对于 PHP 初学者也非常有帮助,非常容易学习,让我们开始学习吧~
1. 发送 SMS
在开发 Web 或者移动应用的时候,经常会遇到需要发送 SMS 给用户,或者因为登录原因,或者是为了发送信息。下面的 PHP 代码就实现了发送 SMS 的功能。
为了使用任何的语言发送 SMS,需要一个 SMS gateway。大部分的 SMS 会提供一个 API,这里是使用 MSG91 作为 SMS gateway。
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function send_sms( $mobile , $msg ) { $authKey = "XXXXXXXXXXX" ; date_default_timezone_set( "Asia/Kolkata" ); $date = strftime ( "%Y-%m-%d %H:%M:%S" ); //Multiple mobiles numbers separated by comma $mobileNumber = $mobile ; //Sender ID,While using route4 sender id should be 6 characters long. $senderId = "IKOONK" ; //Your message to send, Add URL encoding here. $message = urlencode( $msg ); //Define route $route = "template" ; //Prepare you post parameters $postData = array ( 'authkey' => $authKey , 'mobiles' => $mobileNumber , 'message' => $message , 'sender' => $senderId , 'route' => $route ); //API URL $url = " https://control.msg91.com/sendhttp.php " ; // init the resource $ch = curl_init(); curl_setopt_array( $ch , array ( CURLOPT_URL => $url , CURLOPT_RETURNTRANSFER => true, CURLOPT_POST => true, CURLOPT_POSTFIELDS => $postData //,CURLOPT_FOLLOWLOCATION => true )); //Ignore SSL certificate verification curl_setopt( $ch , CURLOPT_SSL_VERIFYHOST, 0); curl_setopt( $ch , CURLOPT_SSL_VERIFYPEER, 0); //get response $output = curl_exec( $ch ); //Print error if any if (curl_errno( $ch )) { echo 'error:' . curl_error( $ch ); } curl_close( $ch ); } |
其中“$authKey = "XXXXXXXXXXX";”需要你输入你的密码,“$senderId = "IKOONK";”需要你输入你的 SenderID。当输入移动号码的时候需要指定国家代码 (比如,美国是 1,印度是 91 )。
语法:
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<?php $message = "Hello World" ; $mobile = "918112998787" ; send_sms( $mobile , $message ); ?> |
2. 使用 mandrill 发送邮件
Mandrill 是一款强大的 SMTP 提供器。开发者倾向于使用一个第三方 SMTP provider 来获取更好的收件交付。
下面的函数中,你需要把 “Mandrill.php” 放在同一个文件夹,作为 PHP 文件,这样就可以使用TA来发送邮件。
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function send_email( $to_email , $subject , $message1 ) { require_once 'Mandrill.php' ; $apikey = 'XXXXXXXXXX' ; //specify your api key here $mandrill = new Mandrill( $apikey ); $message = new stdClass(); $message ->html = $message1 ; $message ->text = $message1 ; $message ->subject = $subject ; $message ->from_email = "blog@koonk.com" ; //Sender Email $message ->from_name = "KOONK" ; //Sender Name $message ->to = array ( array ( "email" => $to_email )); $message ->track_opens = true; $response = $mandrill ->messages->send( $message ); } |
$apikey = 'XXXXXXXXXX'; //specify your api key here”这里需要你指定你的 API 密钥(从 Mandrill 账户中获得)。
语法:
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<?php $to = "abc@example.com" ; $subject = "This is a test email" ; $message = "Hello World!" ; send_email( $to , $subject , $message ); ?> |
为了达到最好的效果,最好按照 Mandrill 的教程去配置 DNS。
3. PHP 函数:阻止 SQL 注入
SQL 注入或者 SQLi 常见的攻击网站的手段,使用下面的代码可以帮助你防止这些工具。
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function clean( $input ) { if ( is_array ( $input )) { foreach ( $input as $key => $val ) { $output [ $key ] = clean( $val ); // $output[$key] = $this->clean($val); } } else { $output = (string) $input ; // if magic quotes is on then use strip slashes if (get_magic_quotes_gpc()) { $output = stripslashes ( $output ); } // $output = strip_tags($output); $output = htmlentities( $output , ENT_QUOTES, 'UTF-8' ); } // return the clean text return $output ; } |
语法:
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<?php $text = "<script>alert(1)</script>" ; $text = clean( $text ); echo $text ; ?> |
4. 检测用户位置
使用下面的函数,可以检测用户是在哪个城市访问你的网站
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function detect_city( $ip ) { $default = 'UNKNOWN' ; $curlopt_useragent = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)' ; $url = ' http://ipinfodb.com/ip_locator.php?ip= ' . urlencode( $ip ); $ch = curl_init(); $curl_opt = array ( CURLOPT_FOLLOWLOCATION => 1, CURLOPT_HEADER => 0, CURLOPT_RETURNTRANSFER => 1, CURLOPT_USERAGENT => $curlopt_useragent , CURLOPT_URL => $url , CURLOPT_TIMEOUT => 1, CURLOPT_REFERER => ' http:// ' . $_SERVER [ 'HTTP_HOST' ], ); curl_setopt_array( $ch , $curl_opt ); $content = curl_exec( $ch ); if (! is_null ( $curl_info )) { $curl_info = curl_getinfo( $ch ); } curl_close( $ch ); if ( preg_match( '{<li>City : ([^<]*)</li>}i' , $content , $regs ) ) { $city = $regs [1]; } if ( preg_match( '{<li>State/Province : ([^<]*)</li>}i' , $content , $regs ) ) { $state = $regs [1]; } if ( $city != '' && $state != '' ){ $location = $city . ', ' . $state ; return $location ; } else { return $default ; } } |
语法:
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<?php $ip = $_SERVER [ 'REMOTE_ADDR' ]; $city = detect_city( $ip ); echo $city ; ?> |
5. 获取 Web 页面的源代码
使用下面的函数,可以获取任意 Web 页面的 HTML 代码
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function display_sourcecode( $url ) { $lines = file( $url ); $output = "" ; foreach ( $lines as $line_num => $line ) { // loop thru each line and prepend line numbers $output .= "Line #<b>{$line_num}</b> : " . htmlspecialchars( $line ) . "\n" ; } } |
语法:
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<?php $url = " http://blog.koonk.com " ; $source = display_sourcecode( $url ); echo $source ; ?> |
6. 计算喜欢你的 Facebook 页面的用户
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function fb_fan_count( $facebook_name ) { $data = json_decode( file_get_contents ( " https://graph.facebook.com/ " . $facebook_name )); $likes = $data ->likes; return $likes ; } |
语法:
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<?php $page = "koonktechnologies" ; $count = fb_fan_count( $page ); echo $count ; ?> |
7. 确定任意图片的主导颜色
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function dominant_color( $image ) { $i = imagecreatefromjpeg( $image ); for ( $x =0; $x <imagesx( $i ); $x ++) { for ( $y =0; $y <imagesy( $i ); $y ++) { $rgb = imagecolorat( $i , $x , $y ); $r = ( $rgb >> 16) & 0xFF; $g = ( $rgb >> & 0xFF; $b = $rgb & 0xFF; $rTotal += $r ; $gTotal += $g ; $bTotal += $b ; $total ++; } } $rAverage = round ( $rTotal / $total ); $gAverage = round ( $gTotal / $total ); $bAverage = round ( $bTotal / $total ); } |
8. whois 查询
使用下面的函数可以获取任何域名用户的完整细节
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function whois_query( $domain ) { // fix the domain name: $domain = strtolower (trim( $domain )); $domain = preg_replace( '/^http:\/\//i' , '' , $domain ); $domain = preg_replace( '/^www\./i' , '' , $domain ); $domain = explode ( '/' , $domain ); $domain = trim( $domain [0]); // split the TLD from domain name $_domain = explode ( '.' , $domain ); $lst = count ( $_domain )-1; $ext = $_domain [ $lst ]; // You find resources and lists // like these on wikipedia: // // http://de.wikipedia.org/wiki/Whois // $servers = array ( "biz" => "whois.neulevel.biz" , "com" => "whois.internic.net" , "us" => "whois.nic.us" , "coop" => "whois.nic.coop" , "info" => "whois.nic.info" , "name" => "whois.nic.name" , "net" => "whois.internic.net" , "gov" => "whois.nic.gov" , "edu" => "whois.internic.net" , "mil" => "rs.internic.net" , "int" => "whois.iana.org" , "ac" => "whois.nic.ac" , "ae" => "whois.uaenic.ae" , "at" => "whois.ripe.net" , "au" => "whois.aunic.net" , "be" => "whois.dns.be" , "bg" => "whois.ripe.net" , "br" => "whois.registro.br" , "bz" => "whois.belizenic.bz" , "ca" => "whois.cira.ca" , "cc" => "whois.nic.cc" , "ch" => "whois.nic.ch" , "cl" => "whois.nic.cl" , "cn" => "whois.cnnic.net.cn" , "cz" => "whois.nic.cz" , "de" => "whois.nic.de" , "fr" => "whois.nic.fr" , "hu" => "whois.nic.hu" , "ie" => "whois.domainregistry.ie" , "il" => "whois.isoc.org.il" , "in" => "whois.ncst.ernet.in" , "ir" => "whois.nic.ir" , "mc" => "whois.ripe.net" , "to" => "whois.tonic.to" , "tv" => "whois.tv" , "ru" => "whois.ripn.net" , "org" => "whois.pir.org" , "aero" => "whois.information.aero" , "nl" => "whois.domain-registry.nl" ); if (!isset( $servers [ $ext ])){ die ( 'Error: No matching nic server found!' ); } $nic_server = $servers [ $ext ]; $output = '' ; // connect to whois server: if ( $conn = fsockopen ( $nic_server , 43)) { fputs ( $conn , $domain . "\r\n" ); while (! feof ( $conn )) { $output .= fgets ( $conn ,128); } fclose( $conn ); } else { die ( 'Error: Could not connect to ' . $nic_server . '!' ); } return $output ; } |
语法:
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<?php $domain = " http://www.blog.koonk.com " ; $result = whois_query( $domain ); print_r( $result ); ?> |
9. 验证邮箱地址
有时候,当在网站填写表单,用户可能会输入错误的邮箱地址,这个函数可以验证邮箱地址是否有效。
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function is_validemail( $email ) { $check = 0; if (filter_var( $email ,FILTER_VALIDATE_EMAIL)) { $check = 1; } return $check ; } |
语法:
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<?php $email = "blog@koonk.com" ; $check = is_validemail( $email ); echo $check ; // If the output is 1, then email is valid. ?> |
10. 获取用户的真实 IP
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function getRealIpAddr() { if (!emptyempty( $_SERVER [ 'HTTP_CLIENT_IP' ])) { $ip = $_SERVER [ 'HTTP_CLIENT_IP' ]; } elseif (!emptyempty( $_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 ; } |
语法:
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<?php $ip = getRealIpAddr(); echo $ip ; ?> |
11. 转换 URL:从字符串变成超链接
如果你正在开发论坛,博客或者是一个常规的表单提交,很多时候都要用户访问一个网站。使用这个函数,URL 字符串就可以自动的转换为超链接。
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function makeClickableLinks( $text ) { $text = eregi_replace ( '(((f|ht){1} tp:// )[-a-zA-Z0-9@:%_+.~#?&//=]+)' , '<a href="\1">\1</a>' , $text ); $text = eregi_replace ( '([[:space:]()[{}])(www.[-a-zA-Z0-9@:%_+.~#?&//=]+)' , '\1<a href=" http:// \2">\2</a>' , $text ); $text = eregi_replace ( '([_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3})' , '<a href="mailto:\1">\1</a>' , $text ); return $text ; } |
语法:
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<?php $text = "This is my first post on http://blog.koonk.com " ; $text = makeClickableLinks( $text ); echo $text ; ?> |
12. 阻止多个 IP 访问你的网站
这个代码片段可以方便你禁止某些特定的 IP 地址访问你的网站
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if ( ! file_exists ( 'blocked_ips.txt' ) ) { $deny_ips = array ( '127.0.0.1' , '192.168.1.1' , '83.76.27.9' , '192.168.1.163' ); } else { $deny_ips = file( 'blocked_ips.txt' ); } // read user ip adress: $ip = isset( $_SERVER [ 'REMOTE_ADDR' ]) ? trim( $_SERVER [ 'REMOTE_ADDR' ]) : '' ; // search current IP in $deny_ips array if ( ( array_search ( $ip , $deny_ips ))!== FALSE ) { // address is blocked: echo 'Your IP adress (' . $ip . ') was blocked!' ; exit ; } |
13. 强制性文件下载
如果你需要下载特定的文件而不用另开新窗口,下面的代码片段可以帮助你。
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function force_download( $file ) { $dir = "../log/exports/" ; if ((isset( $file ))&&( file_exists ( $dir . $file ))) { header( "Content-type: application/force-download" ); header( 'Content-Disposition: inline; filename="' . $dir . $file . '"' ); header( "Content-Transfer-Encoding: Binary" ); header( "Content-length: " . filesize ( $dir . $file )); header( 'Content-Type: application/octet-stream' ); header( 'Content-Disposition: attachment; filename="' . $file . '"' ); readfile( "$dir$file" ); } else { echo "No file selected" ; } } |
语法:
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<php force_download( "image.jpg" ); ?> |
14. 创建 JSON 数据
使用下面的 PHP 片段可以创建 JSON 数据,可以方便你创建移动应用的 Web 服务
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$json_data = array ( 'id' =>1, 'name' => "Mohit" ); echo json_encode( $json_data ); |
15. 压缩 zip 文件
使用下面的 PHP 片段可以即时压缩 zip 文件
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function create_zip( $files = array (), $destination = '' , $overwrite = false) { //if the zip file already exists and overwrite is false, return false if ( file_exists ( $destination ) && ! $overwrite ) { return false; } //vars $valid_files = array (); //if files were passed in... if ( is_array ( $files )) { //cycle through each file foreach ( $files as $file ) { //make sure the file exists if ( file_exists ( $file )) { $valid_files [] = $file ; } } } //if we have good files... if ( count ( $valid_files )) { //create the archive $zip = new ZipArchive(); if ( $zip ->open( $destination , $overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) { return false; } //add the files foreach ( $valid_files as $file ) { $zip ->addFile( $file , $file ); } //debug //echo 'The zip archive contains ',$zip->numFiles,' files with a status of ',$zip->status; //close the zip -- done! $zip ->close(); //check to make sure the file exists return file_exists ( $destination ); } else { return false; } } |
语法:
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<?php $files = array ( 'file1.jpg' , 'file2.jpg' , 'file3.gif' ); create_zip( $files , 'myzipfile.zip' , true); ?> |
16. 解压文件
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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; } } |
语法:
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<?php unzip( 'test.zip' , 'unziped/test' ); //File would be unzipped in unziped/test folder ?> |
17. 缩放图片
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function resize_image( $filename , $tmpname , $xmax , $ymax ) { $ext = explode ( "." , $filename ); $ext = $ext [ count ( $ext )-1]; if ( $ext == "jpg" || $ext == "jpeg" ) $im = imagecreatefromjpeg( $tmpname ); elseif ( $ext == "png" ) $im = imagecreatefrompng( $tmpname ); elseif ( $ext == "gif" ) $im = imagecreatefromgif( $tmpname ); $x = imagesx( $im ); $y = imagesy( $im ); if ( $x <= $xmax && $y <= $ymax ) return $im ; if ( $x >= $y ) { $newx = $xmax ; $newy = $newx * $y / $x ; } else { $newy = $ymax ; $newx = $x / $y * $newy ; } $im2 = imagecreatetruecolor( $newx , $newy ); imagecopyresized( $im2 , $im , 0, 0, 0, 0, floor ( $newx ), floor ( $newy ), $x , $y ); return $im2 ; } |
18. 使用 mail() 发送邮件
之前我们提供了如何使用 Mandrill 发送邮件的 PHP 代码片段,但是如果你不想使用第三方服务,那么可以使用下面的 PHP 代码片段。
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function send_mail( $to , $subject , $body ) { $headers = "From: KOONK\r\n" ; $headers .= "Reply-To: blog@koonk.com\r\n" ; $headers .= "Return-Path: blog@koonk.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 ); } |
语法:
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<?php $to = "admin@koonk.com" ; $subject = "This is a test mail" ; $body = "Hello World!" ; send_mail( $to , $subject , $body ); ?> |
19. 把秒转换成天数,小时数和分钟
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function secsToStr( $secs ) { if ( $secs >=86400){ $days = floor ( $secs /86400); $secs = $secs %86400; $r = $days . ' day' ; if ( $days <>1){ $r .= 's' ;} if ( $secs >0){ $r .= ', ' ;}} if ( $secs >=3600){ $hours = floor ( $secs /3600); $secs = $secs %3600; $r .= $hours . ' hour' ; if ( $hours <>1){ $r .= 's' ;} if ( $secs >0){ $r .= ', ' ;}} if ( $secs >=60){ $minutes = floor ( $secs /60); $secs = $secs %60; $r .= $minutes . ' minute' ; if ( $minutes <>1){ $r .= 's' ;} if ( $secs >0){ $r .= ', ' ;}} $r .= $secs . ' second' ; if ( $secs <>1){ $r .= 's' ;} return $r ; } |
语法:
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<?php $seconds = "56789" ; $output = secsToStr( $seconds ); echo $output ; ?> |
20. 数据库连接
连接 MySQL 数据库
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<?php $DBNAME = 'koonk' ; $HOST = 'localhost' ; $DBUSER = 'root' ; $DBPASS = 'koonk' ; $CONNECT = mysql_connect( $HOST , $DBUSER , $DBPASS ); if (! $CONNECT ) { echo 'MySQL Error: ' .mysql_error(); } $SELECT = mysql_select_db( $DBNAME ); if (! $SELECT ) { echo 'MySQL Error: ' .mysql_error(); } ?> |
21. 目录清单
使用下面的 PHP 代码片段可以在一个目录中列出所有文件和文件夹
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function list_files( $dir ) { if ( is_dir ( $dir )) { if ( $handle = opendir( $dir )) { while (( $file = readdir( $handle )) !== false) { if ( $file != "." && $file != ".." && $file != "Thumbs.db" /*pesky windows, images..*/ ) { echo '<a target="_blank" href="' . $dir . $file . '">' . $file . '</a>' . "\n" ; } } closedir ( $handle ); } } } |
语法:
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<?php list_files( "images/" ); //This will list all files of images folder ?> |
22. 检测用户语言
使用下面的 PHP 代码片段可以检测用户浏览器所使用的语言
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function get_client_language( $availableLanguages , $default = 'en' ){ if (isset( $_SERVER [ 'HTTP_ACCEPT_LANGUAGE' ])) { $langs = explode ( ',' , $_SERVER [ 'HTTP_ACCEPT_LANGUAGE' ]); foreach ( $langs as $value ){ $choice = substr ( $value ,0,2); if (in_array( $choice , $availableLanguages )){ return $choice ; } } } return $default ; } |
23. 查看 CSV 文件
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function readCSV( $csvFile ){ $file_handle = fopen ( $csvFile , 'r' ); while (! feof ( $file_handle ) ) { $line_of_text [] = fgetcsv ( $file_handle , 1024); } fclose( $file_handle ); return $line_of_text ; } |
语法:
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<?php $csvFile = "test.csv" ; $csv = readCSV( $csvFile ); $a = csv[0][0]; // This will get value of Column 1 & Row 1 ?> |
以上就是本文的全部内容,希望对大家的学习有所帮助。