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($ch);
}
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其中“$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,$message);
?>
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2. 使用 mandrill 发送邮件
Mandrill 是一款强大的 SMTP 提供器。开发者倾向于使用一个第三方 SMTP provider 来获取更好的收件交付。
下面的函数中，你需要把 “Mandrill.php” 放在同一个文件夹，作为 PHP 文件，这样就可以使用TA来发送邮件。
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function send_email($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);
}
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$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);
?>
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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;
}
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语法：
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<?php
$text = "<script>alert(1)</script>";
$text = clean($text);
echo $text;
?>
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4. 检测用户位置
使用下面的函数，可以检测用户是在哪个城市访问你的网站
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function detect_city($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;
}
}
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语法：
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<?php
$ip = $_SERVER['REMOTE_ADDR'];
$city = detect_city($ip);
echo $city;
?>
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5. 获取 Web 页面的源代码
使用下面的函数，可以获取任意 Web 页面的 HTML 代码
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function display_sourcecode($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";
}
}
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语法：
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<?php
$url = "http://blog.koonk.com";
$source = display_sourcecode($url);
echo $source;
?>
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6. 计算喜欢你的 Facebook 页面的用户
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function fb_fan_count($facebook_name)
{
$data = json_decode(file_get_contents("https://graph.facebook.com/".$facebook_name));
$likes = $data->likes;
return $likes;
}
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语法：
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<?php
$page = "koonktechnologies";
$count = fb_fan_count($page);
echo $count;
?>
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7. 确定任意图片的主导颜色
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function dominant_color($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/$total);
}
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8. whois 查询
使用下面的函数可以获取任何域名用户的完整细节
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function whois_query($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;
}
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语法：
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<?php
$domain = "http://www.blog.koonk.com";
$result = whois_query($domain);
print_r($result);
?>
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9. 验证邮箱地址
有时候，当在网站填写表单，用户可能会输入错误的邮箱地址，这个函数可以验证邮箱地址是否有效。
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function is_validemail($email)
{
$check = 0;
if(filter_var($email,FILTER_VALIDATE_EMAIL))
{
$check = 1;
}
return $check;
}
语法：
<?php
$email = "blog@koonk.com";
$check = is_validemail($email);
echo $check;
// If the output is 1, then email is valid.
?>
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10. 获取用户的真实 IP
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function getRealIpAddr()
{
if (!emptyempty($_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;
}
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语法：
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<?php
$ip = getRealIpAddr();
echo $ip;
?>
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11. 转换 URL：从字符串变成超链接
如果你正在开发论坛，博客或者是一个常规的表单提交，很多时候都要用户访问一个网站。使用这个函数，URL 字符串就可以自动的转换为超链接。
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function makeClickableLinks($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：
<?php
$text = "This is my first post on http://blog.koonk.com";
$text = makeClickableLinks($text);
echo $text;
?>
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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;
}
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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$file");
} else {
echo "No file selected";
}
}
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语法：
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<php
force_download("image.jpg");
?>
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14. 创建 JSON 数据
使用下面的 PHP 片段可以创建 JSON 数据，可以方便你创建移动应用的 Web 服务
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$json_data = array ('id'=>1,'name'=>"Mohit");
echo json_encode($json_data);
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15. 压缩 zip 文件
使用下面的 PHP 片段可以即时压缩 zip 文件
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function create_zip($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：
<?php
$files=array('file1.jpg', 'file2.jpg', 'file3.gif');
create_zip($files, 'myzipfile.zip', true);
?>
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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.'/'.$file);
}
return TRUE;
}else{
return FALSE;
}
}
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语法：
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<?php
unzip('test.zip','unziped/test'); //File would be unzipped in unziped/test folder
?>
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17. 缩放图片
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function resize_image($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 $im2;
}
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18. 使用 mail() 发送邮件
之前我们提供了如何使用 Mandrill 发送邮件的 PHP 代码片段，但是如果你不想使用第三方服务，那么可以使用下面的 PHP 代码片段。
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function send_mail($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：
<?php
$to = "admin@koonk.com";
$subject = "This is a test mail";
$body = "Hello World!";
send_mail($to,$subject,$body);
?>
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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;
}
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语法：
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<?php
$seconds = "56789";
$output = secsToStr($seconds);
echo $output;
?>
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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(!$SELECT)
{
echo 'MySQL Error: '.mysql_error();
}
?>
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21. 目录清单
使用下面的 PHP 代码片段可以在一个目录中列出所有文件和文件夹
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function list_files($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($handle);
}
}
}
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语法：
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<?php
list_files("images/"); //This will list all files of images folder
?>
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22. 检测用户语言
使用下面的 PHP 代码片段可以检测用户浏览器所使用的语言
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function get_client_language($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 $default;
}
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23. 查看 CSV 文件
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function readCSV($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：
<?php
$csvFile = "test.csv";
$csv = readCSV($csvFile);
$a = csv[0][0]; // This will get value of Column 1 & Row 1
?>
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24. 从 PHP 数据创建 CSV 文件
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function generateCsv($data, $delimiter = ',', $enclosure = '"') {
$handle = fopen('php://temp', 'r+');
foreach ($data as $line) {
fputcsv($handle, $line, $delimiter, $enclosure);
}
rewind($handle);
while (!feof($handle)) {
$contents .= fread($handle, 8192);
}
fclose($handle);
return $contents;
}
语法：
<?php
$data[0] = "apple";
$data[1] = "oranges";
generateCsv($data, $delimiter = ',', $enclosure = '"');
?>
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25. 解析 XML 数据
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$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 $record->code, '';
}
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26. 解析 JSON 数据
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$json_string='{"id":1,"name":"rolf","country":"russia","office":["google","oracle"]} ';
$obj=json_decode($json_string);
//print the parsed data
echo $obj->name; //displays rolf
echo $obj->office[0]; //displays google
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27. 获取当前页面 URL
这个 PHP 片段可以帮助你让用户登录后直接跳转到之前浏览的页面
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function current_url()
{
$url = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$validURL = str_replace("&", "&", $url);
return validURL;
}
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语法：
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<?php
echo "Currently you are on: ".current_url();
?>
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28. 从任意的 Twitter 账号获取最新的 Tweet
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function my_twitter($username)
{
$no_of_tweets = 1;
$feed = "http://search.twitter.com/search.atom?q=from:" . $username . "&rpp=" . $no_of_tweets;
$xml = simplexml_load_file($feed);
foreach($xml->children() as $child) {
foreach ($child as $value) {
if($value->getName() == "link") $link = $value['href'];
if($value->getName() == "content") {
$content = $value . "";
echo '<p class="twit">'.$content.' <a class="twt" href="'.$link.'" html" id="highlighter_7135">
31. 删除文件夹内容
语法：
语法：
语法：
文章转自：http://blog.koonk.com 延伸 · 阅读
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