Www. csdn. netarticle2013-11-012817365-useful-snippets-for-php-developers 1. Check whether the email has been read when you are sending the email, you may want to know whether the email has been read by the recipient. Here is a very interesting code snippet that shows the actual date and time when the recipient's IP address records are read. 12
Http://www.csdn.net/article/2013-11-01/2817365-useful-snippets-for-php-developers 1. Check if the email has been read when you are sending it, you may be wondering if it has been read by the recipient. Here is a very interesting code snippet that shows the actual date and time when the recipient's IP address records are read. 1 2
Http://www.csdn.net/article/2013-11-01/2817365-useful-snippets-for-php-developers
1. Check whether the email has been read
When you send an email, you may want to know whether the email has been read by the recipient. This section is very interesting.CodeThe clip displays the actual date and time when the recipient's IP address records are read.
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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);
?>
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2. Extract keywords from webpages
A greatCodeFragments can easily extract keywords from webpages.
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$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( $keywords );
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3. Search for all links on the page
With DOM, you can easily capture links from any page,CodeExample:
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$html = file_get_contents('http://www.example.com');
$dom = newDOMDocument();
@$dom->loadHTML($html);
// grab all the on the page
$xpath = newDOMXPath($dom);
$hrefs = $xpath->evaluate("/html/body//a");
for ($i = 0; $i < $hrefs->length; $i++) {
$href = $hrefs->item($i);
$url = $href->getAttribute('href');
echo $url.'
';
}
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4. automatically convert the URL and jump to the hyperlink
In WordPress, If You Want To automatically convert the URL and jump to the hyperlink page, you can use the built-in function make_clickable () to perform this operation. If you want to operate this program outside of WordPress, you can refer to the wp-nodes des/formatting. php source.Code.
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function _make_url_clickable_cb($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] ."$url". $ret;
}
function _make_web_ftp_clickable_cb($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] ."$dest". $ret;
}
function _make_email_clickable_cb($matches) {
$email = $matches[2] .'@'. $matches[3];
return$matches[1] ."$email";
}
function make_clickable($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("#(]+?>|>))]+?>([^>]+?)#i","$1$3", $ret);
$ret = trim($ret);
return$ret;
}
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5. Create a Data URL
Data URLs can be directly embedded into HTML, CSS, and JS to save a lot of HTTP requests. The following sectionCodeYou can use $ file to easily create data URLs.
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function data_uri($file, $mime) {
$contents=file_get_contents($file);
$base64=base64_encode($contents);
echo"data:$mime;base64,$base64";
}
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6. Download and save a remote image from the server
When you build a website, you can download an image from a remote server and save it on your own server. This operation is often used.CodeAs follows:
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$image = file_get_contents('http://www.url.com/image.jpg');
file_put_contents('/images/image.jpg', $image);//Where to save the image
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7. Remove the Remove Microsoft Word HTML Tag
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function cleanHTML($html) {
///
/// 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
$html = ereg_replace("<(/)?(font|span|del|ins)[^>]*>","",$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 $html
}
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8. Check the browser Language
If your website has multiple languages, you can use this sectionCodeAs the default language to detect the browser language. SectionCodeThe initial language used by the browser client is returned.
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function get_client_language($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$default;
}
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9. display the number of Facebook fans
If your website or blog has an internal link Facebook page, you may want to know how many fans you have. This sectionCodeThis will help you view the number of Facebook fans. Remember, don't forget to add this section in the second line of your page ID.Code.
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$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;
?>
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