奥门新浦京官方网站整理的可以直接用的18个PHP代码函数片段

本文由码农网 –
小峰原创翻译,转载请看清文末的转载要求,欢迎参与我们的付费投稿计划!

每位程序员和开发者都喜欢讨论他们最爱的代码片段,尤其是当PHP开发者花费数个小时为网页编码或创建应用时,他们更知道这些代码的重要性。为了节约编码时间,笔者收集了一些较为实用的代码片段,帮助开发者提高工作效率。>>>

一.查看邮件是否已被阅读
当你发送邮件时,你肯定很想知道你的邮件是否已被对方查看。下面的代码就能实现记录阅读你邮件的IP地址,还有实际的阅读日期和时间。复制代码
代码如下:error_reporting;Header(“Content-Type: image/jpeg”);//Get IPif
(!empty($_SERVER[‘HTTP_CLIENT_IP’])){
$ip=$_SERVER[‘HTTP_CLIENT_IP’];}elseif
(!empty($_SERVER[‘HTTP_X_FORWARDED_FOR’])){
$ip=$_SERVER[‘HTTP_X_FORWARDED_FOR’];}else{
$ip=$_SERVER[‘REMOTE_ADDR’];}//Time$actual_time =
time();$actual_day = date(‘Y.m.d’, $actual_time);$actual_day_chart =
date(‘d/m/y’, $actual_time);$actual_hour = date(‘H:i:s’,
$actual_time);//GET Browser$browser = $_SERVER[‘HTTP_USER_奥门新浦京官方网站 ,AGENT’];
//LOG$myFile = “log.txt”;$fh = fopen;$stringData = $actual_day . ‘ ‘ .
$actual_hour . ‘ ‘ . $ip . ‘ ‘ . $browser . ‘ ‘ .

在开发网站、app或博客时,代码片段可以真正地为你节省时间。今天,我们就来分享一下我收集的一些超级有用的PHP代码片段。一起来看一看吧!

1) Whois query using PHP ——利用PHP获取Whois请求

“rn”;fwrite;fclose;//Generate Image $newimage = ImageCreate;$grigio

ImageColorAllocate($newimage,255,255,255);ImageJPEG;ImageDestroy;?>源代码:

这段优秀的代码可以简单地实现从网页中提取关键词的功能。复制代码 代码如下:$meta =
get_meta_tags(‘ =
$meta[‘keywords’];// Split keywords$keywords = explode;// Trim
them$keywords = array_map;// Remove empty values$keywords =
array_filter;print_r;源代码:

使用DOM,你可以在任意页面上抓取链接,示例如下。复制代码 代码如下:$html =
file_get_contents(‘ = new
DOMDocument();@$dom->loadHTML;// grab all the on the page$xpath = new
DOMXPath;$hrefs = $xpath->evaluate;for ($i = 0; $i <
$hrefs->length; $i++) { $href = $hrefs->item; $url =
$href->getAttribute; echo
$url.”;}源代码:
在Wordpress中,如果你想自动转换所有的URLs为可点击超链接,你就可以使用内置函数make_clickable()实现。当你在WordPress外操作时,你可以参考wp-includes/formatting.php中的源代码。
复制代码 代码如下: function
_make_url_clickable_cb { $ret = ”; $url = $matches[2]; if return
$matches[0]; // removed trailing [.,;:] from URL if ( in_array,
array === true ) { $ret = substr; $url = substr-1); } return
$matches[1] . “$url” . $ret;}function _make_web_ftp_clickable_cb
{ $ret = ”; $dest = $matches[2]; $dest = ‘http://’ . $dest; if return
$matches[0]; // removed trailing [,;:] from URL if ( in_array,
array === true ) { $ret = substr; $dest = substr($dest, 0, strlen; }
return $matches[1] . “$dest” . $ret;}function
_make_email_clickable_cb { $email = $matches[2] . ‘@’ .
$matches[3]; return $matches[1] . “$email”;}function make_clickable
{ $ret = ‘ ‘ . $ret; // in testing, using arrays here was found to be
faster $ret =
preg_replace_callback([w]+?://[w\x80-\xff#$%&~/.-;:=,?@[]+]*)
#is’, ‘_make_url_clickable_cb’, $ret); $ret =
preg_replace_callback.[w\x80-\xff#$%&~/.-;:=,?@[]+]*)#is’,
‘_make_web_ftp_clickable_cb’, $ret); $ret =
preg_replace_callback@+[0-9a-z]{2,})#i’,
‘_make_email_clickable_cb’, $ret);// this one is not in an array
because we need it to run last, for cleanup of accidental links within
links $ret = preg_replace]+?>#i”, “$1$3”, $ret); $ret = trim;
return
$ret;}源代码:

数据URI可以帮助将图像嵌入到HTML/CSS/JS中,从而节省HTTP请求。下面的函数可以利用$file创建数据URI。复制代码 代码如下:function data_uri {
$contents=file_get_contents; $base64=base64_encode; echo
“data:$mime;base64,$base64″;}源代码:
当你在搭建网站时,很可能会从远程服务器上下载图片保存到你自己的服务器上,下面的代码就可以帮助你实现这个功能。复制代码 代码如下:$image =
file_get_contents(”,
$image); //Where to save the
image源代码:
Word HTML标签* 当你使用Microsoft
Word时,会创建很多标签tag,比如font、span、style、class等,这些标签在Word中十分有用,但当你从Word中把文本粘贴到网页上,就会出现很多没用的标签。下面实用的函数可以帮助你清除所有的Word
HTML标签。复制代码 代码如下:function
cleanHTML {/// /// Removes all FONT and SPAN tags, and all Class and
Style attributes./// Designed to get rid of non-standard Microsoft Word
HTML tags./// // start by completely removing all unwanted tags$html =
ereg_replace?[^>]
>”,””,$html);// then run another pass over
the html , removing unwanted attributes$html =

奥门新浦京官方网站 1

利用这段代码,在特定的域名里可获得whois信息。把域名名称作为参数,并显示所有域名的相关信息。

ereg_replace(class|lang|style|size|face)=(“[^”]*”|'[^’]*’|[^>]+)>”,””,$html);$html

ereg_replace(class|lang|style|size|face)=(“[^”]*”|'[^’]*’|[^>]+)>”,””,$html);return
$html}源代码:

如果你的网站是多种语言的,下面的代码可以帮助你检测浏览器语言,它会返回客户端浏览器的默认语言。复制代码 代码如下:function
get_client_language($availableLanguages, $default=’en’){ if
(isset($_SERVER[‘HTTP_ACCEPT_LANGUAGE’])) {
$langs=explode(‘,’,$_SERVER[‘HTTP_ACCEPT_LANGUAGE’]); foreach {
$choice=substr; if(in_array($choice, $availableLanguages)){ return
$choice; } } } return
$default;}源代码:
如果在你的网站或博客中,链有Facebook页面,你可能希望显示Facebook上的粉丝数量,下面的代码就可以帮助你获取粉丝数量,另外不要忘记在代码第二行添加你的页面ID。复制代码 代码如下: $page_id = “YOUR PAGE-ID”;
$xml = @simplexml_load_file(”
method=facebook.fql.query&query=SELECT%20fan_count%20FROM%20page%20WHERE%
20page_”) or die ; $fans = $xml->page->fan_count; echo
$fans;?>
源代码:

1.创建数据URI

数据URI在嵌入图像到HTML / CSS /
JS中以节省HTTP请求时非常有用,并且可以减少网站的加载时间。下面的函数可以创建基于$file的数据URI。

function data_uri($file, $mime) {
 $contents=file_get_contents($file);
 $base64=base64_encode($contents);
 echo "data:$mime;base64,$base64";
}

 

2.合并JavaScript和CSS文件

另一个可以尽量减少HTTP请求和节省页面加载时间的好建议是:合并你的CSS和JS文件。虽然我更建议大家使用专用插件(例如minify),但使用PHP来合并文件也非常容易。我们来看一下:

function combine_my_files($array_files, $destination_dir, $dest_file_name){
 if(!is_file($destination_dir . $dest_file_name)){ //continue only if file doesn't exist
 $content = "";
 foreach ($array_files as $file){ //loop through array list
 $content .= file_get_contents($file); //read each file
 }
 //You can use some sort of minifier here
 //minify_my_js($content);
 $new_file = fopen($destination_dir . $dest_file_name, "w" ); //open file for writing
 fwrite($new_file , $content); //write to destination
 fclose($new_file);
 return '<script src="'.%20$destination_dir%20.%20$dest_file_name.'"></script>'; //output combined file
 }else{
 //use stored file
 return '<script src="'.%20$destination_dir%20.%20$dest_file_name.'"></script>'; //output combine file
 }
}

并且,用法是这样的:

$files = array(
 'http://example/files/sample_js_file_1.js',
 'http://example/files/sample_js_file_2.js',
 'http://example/files/beautyquote_functions.js',
 'http://example/files/crop.js',
 'http://example/files/jquery.autosize.min.js',
 );
echo combine_my_files($files, 'minified_files/', md5("my_mini_file").".js");

 代码如下

3.查看你的电子邮件是否已读

当发送电子邮件时,你会希望知道你的邮件是否已读。这里有一个非常有趣的代码片段,它可以记录阅读你邮件的IP地址,以及实际的日期和时间。

<?
error_reporting(0);
Header("Content-Type: image/jpeg");
//Get IP
if (!empty($_SERVER['HTTP_CLIENT_IP']))
{
  $ip=$_SERVER['HTTP_CLIENT_IP'];
}
elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
{
  $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
}
else
{
  $ip=$_SERVER['REMOTE_ADDR'];
}
//Time
$actual_time = time();
$actual_day = date('Y.m.d', $actual_time);
$actual_day_chart = date('d/m/y', $actual_time);
$actual_hour = date('H:i:s', $actual_time);
//GET Browser
$browser = $_SERVER['HTTP_USER_AGENT'];
//LOG
$myFile = "log.txt";
$fh = fopen($myFile, 'a+');
$stringData = $actual_day . ' ' . $actual_hour . ' ' . $ip . ' ' . $browser . ' ' . "rn";
fwrite($fh, $stringData);
fclose($fh);
//Generate Image (Es. dimesion is 1x1)
$newimage = ImageCreate(1,1);
$grigio = ImageColorAllocate($newimage,255,255,255);
ImageJPEG($newimage);
ImageDestroy($newimage);
?>

function whois_query($domain) {
 
    // fix the domain name:
    $domain = strtolower(trim($domain));
    $domain = preg_replace(‘/^’, ”, $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:
    //
    // <a
href=”;
    //
    $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, $domain.”rn”);
        while(!feof($conn)) {
            $output .= fgets($conn,128);
        }
        fclose($conn);
    }
    else { die(‘Error: Could not connect to ‘ . $nic_server . ‘!’); }
 
    return $output;
}

4.从网页提取关键词

正如这小标题所说的那样:这个代码片段能让你轻易地从网页中提取元关键词。

$meta = get_meta_tags('http://www.emoticode.net/');
$keywords = $meta['keywords'];
// Split keywords
$keywords = explode(',', $keywords );
// Trim them
$keywords = array_map( 'trim', $keywords );
// Remove empty values
$keywords = array_filter( $keywords );
print_r( $keywords );

 

5.查找页面上的所有链接

使用DOM,你可以轻松地抓取来网页上的所有链接。这里有一个工作示例:

$html = file_get_contents('http://www.example.com');
$dom = new DOMDocument();
@$dom->loadHTML($html);
// grab all the on the page
$xpath = new DOMXPath($dom);
$hrefs = $xpath->evaluate("/html/body//a");
for ($i = 0; $i < $hrefs->length; $i++) {
 $href = $hrefs->item($i);
 $url = $href->getAttribute('href');
 echo $url.'<br />';
}

2) Text messaging with PHP using the TextMagic API ——使用TextMagic API
获取PHP Test信息

6.自动转换URL为可点击的超链接

在WordPress中,如果你想在字符串中自动转换所有的URL成可点击的超链接,那么使用内置函数make_clickable()可以让你心想事成。如果你需要在WordPress之外这么做,那么你可以在wp-includes/formatting.php参考该函数的源代码:

function _make_url_clickable_cb($matches) {
$ret = '';
$url = $matches[2];
if ( empty($url) )
return $matches[0];
// removed trailing [.,;:] from URL
if ( in_array(substr($url, -1), array('.', ',', ';', ':')) === true ) {
$ret = substr($url, -1);
$url = substr($url, 0, strlen($url)-1);
}
return $matches[1] . "<a href="$url" rel="nofollow">$url</a>" . $ret;
}
function _make_web_ftp_clickable_cb($matches) {
$ret = '';
$dest = $matches[2];
$dest = 'http://' . $dest;
if ( empty($dest) )
return $matches[0];
// removed trailing [,;:] from URL
if ( in_array(substr($dest, -1), array('.', ',', ';', ':')) === true ) {
$ret = substr($dest, -1);
$dest = substr($dest, 0, strlen($dest)-1);
}
return $matches[1] . "<a href="$dest" rel="nofollow">$dest</a>" . $ret;
}
function _make_email_clickable_cb($matches) {
$email = $matches[2] . '@' . $matches[3];
return $matches[1] . "<a href="mailto:$email">$email</a>";
}
function make_clickable($ret) {
$ret = ' ' . $ret;
// in testing, using arrays here was found to be faster
$ret = preg_replace_callback('#([s>])([w]+?://[w\x80-\xff#$%&~/.-;:=,?@[]+]*)#is', '_make_url_clickable_cb', $ret);
$ret = preg_replace_callback('#([s>])((www|ftp).[w\x80-\xff#$%&~/.-;:=,?@[]+]*)#is', '_make_web_ftp_clickable_cb', $ret);
$ret = preg_replace_callback('#([s>])([.0-9a-z_+-]+)@(([0-9a-z-]+.)+[0-9a-z]{2,})#i', '_make_email_clickable_cb', $ret);
// this one is not in an array because we need it to run last, for cleanup of accidental links within links
$ret = preg_replace("#(<a( [^>]+?>|>))<a [^>]+?>([^>]+?)</a></a>#i", "$1$3</a>", $ret);
$ret = trim($ret);
return $ret;
}

TextMagic引入强大的核心API,可轻松将SMS发送到手机。该API是需要付费。

7.在你的服务器上下载并保存远程图像

在远程服务器上下载一个图像,并将其保存在自己的服务器上,在建立网站时很有用,而且这也很容易做到。下面的这两行代码就能为你办到。

$image = file_get_contents('http://www.url.com/image.jpg');
file_put_contents('/images/image.jpg', $image); //Where to save the image

 代码如下

8.检测浏览器语言

如果你的网站使用多种语言,那么检测浏览器语言,并将这种语言作为默认语言会很有用。下面的代码将返回客户浏览器使用的语言。

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;
}

the TextMagic PHP lib
require(‘textmagic-sms-api-php/TextMagicAPI.php’);
 
// Set the username and
passWord information
$username = ‘myusername’;
$password = ‘mypassword’;
 
// Create a new instance of TM
$router = new TextMagicAPI(array(
    ‘username’ => $username,
    ‘password’ => $password
));
 
// Send a text message to ‘999-123-4567’
$result = $router->send(‘Wake up!’, array(9991234567), true);
 
// result:  Result is: Array ( [messages] => Array ( [19896128]
=> 9991234567 ) [sent_text] => Wake up! [parts_count] =>
1 )

9.全文显示Facebook粉丝的数量

如果你的网站或博客有一个Facebook的页面,那么你可能想要显示你有多少个粉丝。这个代码片段可以帮助你获取Facebook粉丝的数量。不要忘记在第二行添加你的页面ID。页面ID可以在地址http://facebook.com/yourpagename/info找到。

<?php
$page_id = "302807633129400";
$xml = @simplexml_load_file("http://api.facebook.com/restserver.php?method=facebook.fql.query&query=SELECT%20fan_count%20FROM%20page%20WHERE%20page_id=".$page_id."") or die ("a lot");
$fans = $xml->page->fan_count;
echo $fans;
?>

 

3) Get info about your memory usage——获取内存使用率

这段代码帮助你获取内存使用率。

 代码如下

echo “Initial: “.memory_get_usage().” bytes n”;
/* prints
Initial: 361400 bytes
*/
 
// let’s use up some memory
for ($i = 0; $i < 100000; $i++) {
    $array []= md5($i);
}
 
// let’s remove half of the array
for ($i = 0; $i < 100000; $i++) {
    unset($array[$i]);
}
 
echo “Final: “.memory_get_usage().” bytes n”;
/* prints
Final: 885912 bytes
*/
 
echo “Peak: “.memory_get_peak_usage().” bytes n”;
/* prints
Peak: 13687072 bytes
*/

 

4) Display source code of any webpage——查看任意网页源代码

如果你想查看网页源代码,那么只需更改第二行的URL,源代码就会在网页上显示出。

 

 代码如下

<?php // display source code $lines = file(”);
foreach ($lines as $line_num
=> $line) {
    // loop thru each line and prepend line numbers
    echo “Line #{$line_num} : ” . htmlspecialchars($line) . “
n”;
}

 

5) Create data uri’s——创建数据uri

通过使用此代码,你可以创建数据Uri,这对在HTML/CSS中嵌入图片非常有用,可帮助节省HTTP请求。

 

 代码如下

function data_uri($file, $mime) {
  $contents=file_get_contents($file);
  $base64=base64_encode($contents);
  echo “data:$mime;base64,$base64”;
}

 

6) Detect location by IP——通过IP检索出地理位置

这段代码帮助你查找特定的IP,只需在功能参数上输入IP,就可检测出位置。

 

 代码如下

function detect_city($ip) {
 
        $default = ‘UNKNOWN’;
 
        if (!is_string($ip) || strlen($ip) < 1 || $ip == ‘127.0.0.1’
|| $ip == ‘localhost’)             $ip = ‘8.8.8.8’;        
$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)’;                  $url =
” . urlencode($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(‘{
City : ([^<]*)
}i’, $content, $regs) ) { $city = $regs[1]; } if ( preg_match(‘{
 
State/Province : ([^<]*)
 
}i’, $content, $regs) ) { $state = $regs[1]; } if( $city!=” &&
$state!=” ){ $location = $city . ‘, ‘ . $state; return $location; }else{
return $default; } }

 

7) Detect browser language——查看浏览器语言

检测浏览器使用的代码脚本语言。

 

 代码如下

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;
}

 

8) Check if server is HTTPS——检测服务器是否是HTTPS

 

 代码如下

if ($_SERVER[‘HTTPS’] != “on”) {
    echo “This is not HTTPS”;
}else{
    echo “This is HTTPS”;
}

 

9) Generate CSV file from a PHP array——在PHP数组中生成.csv 文件

 

 代码如下

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;
}

 

一、查看邮件是否已被阅读

当你在发送邮件时,你或许很想知道该邮件是否被对方已阅读。这里有段非常有趣的代码片段能够显示对方IP地址记录阅读的实际日期和时间。

 代码如下

复制代码

<?
error_reporting(0);
Header("Content-Type: image/jpeg");

//Get IP
if (!empty($_SERVER['HTTP_CLIENT_IP']))
{
  $ip=$_SERVER['HTTP_CLIENT_IP'];
}
elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
{
  $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
}
else
{
  $ip=$_SERVER['REMOTE_ADDR'];
}

//Time
$actual_time = time();
$actual_day = date('Y.m.d', $actual_time);
$actual_day_chart = date('d/m/y', $actual_time);
$actual_hour = date('H:i:s', $actual_time);

//GET Browser
$browser = $_SERVER['HTTP_USER_AGENT'];

//LOG
$myFile = "log.txt";
$fh = fopen($myFile, 'a+');
$stringData = $actual_day . ' ' . $actual_hour . ' ' . $ip . ' ' . $browser . ' ' . "\r\n";
fwrite($fh, $stringData);
fclose($fh);

//Generate Image (Es. dimesion is 1x1)
$newimage = ImageCreate(1,1);
$grigio = ImageColorAllocate($newimage,255,255,255);
ImageJPEG($newimage);
ImageDestroy($newimage);

?>

二、从网页中提取关键字

一段伟大的代码片段能够轻松的从网页中提取关键字。

 代码如下

复制代码

$meta = get_meta_tags('http://www.emoticode.net/');
$keywords = $meta['keywords'];
// Split keywords
$keywords = explode(',', $keywords );
// Trim them
$keywords = array_map( 'trim', $keywords );
// Remove empty values
$keywords = array_filter( $keywords );

print_r( $keywords );

三、查找页面上的所有链接

使用DOM,你可以轻松从任何页面上抓取链接,代码示例如下:

 代码如下

复制代码

$html = file_get_contents('http://www.php100.com');

$dom = new DOMDocument();
@$dom->loadHTML($html);

// grab all the on the page
$xpath = new DOMXPath($dom);
$hrefs = $xpath->evaluate("/html/body//a");

for ($i = 0; $i < $hrefs->length; $i++) {
       $href = $hrefs->item($i);
       $url = $href->getAttribute('href');
       echo $url.'<br />';
}

四、自动转换URL,跳转至超链接

在WordPress中,如果你想自动转换URL,跳转至超链接页面,你可以利用内置的函数make_clickable()执行此操作。如果你想基于WordPress之外操作该程序,那么你可以参考wp-includes/formatting.php源代码。

 代码如下

复制代码

function _make_url_clickable_cb($matches) {
    $ret = '';
    $url = $matches[2];

    if ( empty($url) )
        return $matches[0];
    // removed trailing [.,;:] from URL
    if ( in_array(substr($url, -1), array('.', ',', ';', ':')) === true ) {
        $ret = substr($url, -1);
        $url = substr($url, 0, strlen($url)-1);
    }
    return $matches[1] . "<a href=\"$url\" rel=\"nofollow\">$url</a>" . $ret;
}

function _make_web_ftp_clickable_cb($matches) {
    $ret = '';
    $dest = $matches[2];
    $dest = 'http://' . $dest;

    if ( empty($dest) )
        return $matches[0];
    // removed trailing [,;:] from URL
    if ( in_array(substr($dest, -1), array('.', ',', ';', ':')) === true ) {
        $ret = substr($dest, -1);
        $dest = substr($dest, 0, strlen($dest)-1);
    }
    return $matches[1] . "<a href=\"$dest\" rel=\"nofollow\">$dest</a>" . $ret;
}

function _make_email_clickable_cb($matches) {
    $email = $matches[2] . '@' . $matches[3];
    return $matches[1] . "<a href=\"mailto:$email\">$email</a>";
}

function make_clickable($ret) {
    $ret = ' ' . $ret;
    // in testing, using arrays here was found to be faster
    $ret = preg_replace_callback('#([\s>])([\w]+?://[\w\\x80-\\xff\#$%&~/.\-;:=,?@\[\]+]*)#is', '_make_url_clickable_cb', $ret);
    $ret = preg_replace_callback('#([\s>])((www|ftp)\.[\w\\x80-\\xff\#$%&~/.\-;:=,?@\[\]+]*)#is', '_make_web_ftp_clickable_cb', $ret);
    $ret = preg_replace_callback('#([\s>])([.0-9a-z_+-]+)@(([0-9a-z-]+\.)+[0-9a-z]{2,})#i', '_make_email_clickable_cb', $ret);

    // this one is not in an array because we need it to run last, for cleanup of accidental links within links
    $ret = preg_replace("#(<a( [^>]+?>|>))<a [^>]+?>([^>]+?)</a></a>#i", "$1$3</a>", $ret);
    $ret = trim($ret);
    return $ret;
}

五、创建数据URL

数据URL可以直接嵌入到HTML/CSS/JS中,以节省大量的 HTTP请求。
下面的这段代码可利用$file轻松创建数据URL。

 代码如下

复制代码

function data_uri($file, $mime) {
  $contents=file_get_contents($file);
  $base64=base64_encode($contents);
  echo "data:$mime;base64,$base64";
}

六、从服务器上下载&保存一个远程图片

当你在搭建网站时,从远程服务器下载某张图片并且将其保存在自己的服务器上,这一操作会经常用到。代码如下:

 代码如下

复制代码

$image = file_get_contents('http://www.php100.com/image.jpg');
file_put_contents('/images/image.jpg', $image);//Where to save the image

七、移除Remove Microsoft Word HTML Tag

当你使用Microsoft
Word会创建许多Tag,比如font,span,style,class等。这些标签对于Word本身而言是非常有用的,但是当你从Word粘贴至网页时,你会发现很多无用的Tag。因此,下面的这段代码可帮助你删除所有无用的Word
HTML Tag。

 代码如下

复制代码

function cleanHTML($html) {
/// <summary>
/// Removes all FONT and SPAN tags, and all Class and Style attributes.
/// Designed to get rid of non-standard Microsoft Word HTML tags.
/// </summary>
// start by completely removing all unwanted tags

$html = ereg_replace("<(/)?(font|span|del|ins)[^>]*>","",$html);

// then run another pass over the html (twice), removing unwanted attributes

$html = ereg_replace("<([^>]*)(class|lang|style|size|face)=("[^"]*"|'[^']*'|[^>]+)([^>]*)>","<\1>",$html);
$html = ereg_replace("<([^>]*)(class|lang|style|size|face)=("[^"]*"|'[^']*'|[^>]+)([^>]*)>","<\1>",$html);

return $html
}

八、检测浏览器语言

如果你的网站上有多种语言,那么可以使用这段代码作为默认的语言来检测浏览器语言。该段代码将返回浏览器客户端使用的初始语言。

 代码如下

复制代码

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;
}

九、显示Facebook 粉丝数量

如果你的网站或者博客上有内链的Facebook页面,你或许想知道拥有多少粉丝。这段代码将帮助你查看Facebook粉丝数,记住,别忘了在你的页面ID第二行添加该段代码。

 代码如下

复制代码

<?php
    $page_id = "YOUR PAGE-ID";
    $xml = @simplexml_load_file("http://api.facebook.com/restserver.php?method=facebook.fql.query&query=SELECT%20fan_count%20FROM%20page%20WHERE%20page_id=".$page_id."") or die ("a lot");
    $fans = $xml->page->fan_count;
    echo $fans;
?>

发表评论

电子邮件地址不会被公开。 必填项已用*标注