10 Examples of PHP code that must be collected

1, blacklist filtration

function Is_spam ($text, $file, $split = ': ', $regex = False) {
$handle = fopen ($file, ' RB ');
$contents = Fread ($handle, FileSize ($file));
Fclose ($handle);
$lines = Explode ("n", $contents);
$arr = Array ();
foreach ($lines as $line) {
List ($word, $count) = Explode ($split, $line);
if ($regex)
$arr [$word] = $count;
Else
$arr [Preg_quote ($word)] = $count;
}
Preg_match_all ("~". Implode (", Array_keys ($arr))." ~ ", $text, $matches);
$temp = Array ();
foreach ($matches [0] as $match) {
if (!in_array ($match, $temp)) {
$temp [$match] = $temp [$match] + 1;
if ($temp [$match] >= $arr [$word])
return true;
}
}
return false;
}
$file = ' spam.txt ';
$str = ' This string has cat, dog word ';
if (Is_spam ($str, $file))
Echo ' This is spam ';
Else
Echo ' is not spam ';
Ab:3
Dog:3
Cat:2
Monkey:2

2, random color generator

function Randomcolor () {
$str = ' # ';
for ($i = 0; $i < 6; $i + +) {
$randNum = rand (0, 15);
Switch ($randNum) {
Case: $randNum = ' A '; Break
Case one: $randNum = ' B '; Break
Case: $randNum = ' C '; Break
Case: $randNum = ' D '; Break
Case: $randNum = ' E '; Break
Case: $randNum = ' F '; Break
}
$str. = $randNum;
}
return $str;
}
$color = Randomcolor ();

3, download files from the Internet

Set_time_limit (0);
Supports all file types
URL here:
$url = ' http://somsite.com/some_video.flv ';
$pi = PathInfo ($url);
$ext = $pi [' extension '];
$name = $pi [' filename '];
Create a new CURL resource
$ch = Curl_init ();
Set URL and other appropriate options
curl_setopt ($ch, Curlopt_url, $url);
curl_setopt ($ch, Curlopt_header, false);
curl_setopt ($ch, Curlopt_binarytransfer, true);
curl_setopt ($ch, Curlopt_autoreferer, true);
curl_setopt ($ch, curlopt_followlocation, true);
curl_setopt ($ch, Curlopt_returntransfer, true);
Grab URL and pass it to the browser
$opt = curl_exec ($ch);
Close CURL Resource.
Curl_close ($ch);
$saveFile = $name. $ext;
if (Preg_match ("/[^0-9a-z._-]/i", $saveFile))
$saveFile = MD5 (Microtime (TRUE)). $ext;
$handle = fopen ($saveFile, ' WB ');
Fwrite ($handle, $opt);
Fclose ($handle);

4, Alexa/google Page Rank

function Page_rank ($page, $type = ' Alexa ') {
Switch ($type) {
Case ' Alexa ':
$url = ' http://alexa.com/siteinfo/';
$handle = fopen ($url. $page, ' R ');
Break
Case ' Google ':
$url = ' http://google.com/search?client=navclient-auto&ch=6-1484155081&features=Rank&q=info: ';
$handle = fopen ($url. ' http://'. $page, ' R ');
Break
}
$content = Stream_get_contents ($handle);
Fclose ($handle);
$content = Preg_replace ("~ (ntss+) ~", ", $content);
Switch ($type) {
Case ' Alexa ':
if (Preg_match (' ~<div class= data (downup) > (. +?) </div>~im ', $content, $matches)) {
return $matches [2];
}else{
return FALSE;
}
Break
Case ' Google ':
$rank = Explode (': ', $content);
if ($rank [2]!= ')
return $rank [2];
Else
return FALSE;
Break
Default
return FALSE;
Break
}
}
Alexa Page Rank:
Echo ' Alexa Rank: '. Page_rank (' techug.com ');
Echo ';
Google Page Rank
Echo ' Google Rank: '. Page_rank (' techug.com ', ' Google ');

5. Force download files

 





$filename = $_get[' file ']; Get the Fileid from the URL
Query the file ID
$query = sprintf ("SELECT * FROM tablename WHERE id = '%s '", Mysql_real_escape_string ($filename));
$sql = mysql_query ($query);
if (mysql_num_rows ($sql) > 0) {
$row = Mysql_fetch_array ($sql);
Set some headers
Header ("Pragma:public");
Header ("expires:0");
Header ("Cache-control:must-revalidate, Post-check=0, pre-check=0");
Header ("Content-type:application/force-download");
Header ("Content-type:application/octet-stream");
Header ("Content-type:application/download");
Header ("content-disposition:attachment; Filename= ". basename ($row [' FileName ']).";
Header ("Content-transfer-encoding:binary");
Header ("Content-length:" FileSize ($row [' FileName ']));
@readfile ($row [' FileName ']);
Exit (0);
}else{
Header ("Location:/");
Exit
}

6, using email to display the user's gravator avatar

 
  


  

	
	
   
 $gravatar _link = ' http://www.gravatar.com/avatar/'. MD5 ($comment _author_email). ' S=32 '; 

	
   
 Echo ' '; 


  

7, use curl to get the number of RSS subscriptions

$ch = Curl_init ();
curl_setopt ($ch, Curlopt_url, ' https://feedburner.google.com/api/awareness/1.0/GetFeedData?id=7qkrmib4r9rscbplq5qgadiiq4 ');
curl_setopt ($ch, curlopt_returntransfer,1);
curl_setopt ($ch, curlopt_connecttimeout,2);
$content = curl_exec ($ch);
$subscribers = Get_match ('/circulation= ' (. *) "/isu", $content);
Curl_close ($ch);
Viii. Time Difference Calculation
Function ago ($time)
{
$periods = Array ("Second", "Minute", "Hour", "Day", "Week", "Month", "year", "decade");
$lengths = Array ("60", "60", "24", "7", "4.35", "12", "10");
$now = time ();
$difference = $now-$time;
$tense = "Ago";
for ($j = 0; $difference >= $lengths [$j] && $j < count ($lengths)-1; $j + +) {
$difference/= $lengths [$j];
}
$difference = round ($difference);
if ($difference!= 1) {
$periods [$j].= "s";
}
Return "$difference $periods [$j] ' ago '";
}

8. Interception of pictures

 





$filename = "Test.jpg";
List ($w, $h, $type, $attr) = getimagesize ($filename);
$src _im = Imagecreatefromjpeg ($filename);
$src _x = ' 0 '; Begin X
$src _y = ' 0 '; Begin Y
$src _w = ' 100 '; Width
$src _h = ' 100 '; Height
$DST _x = ' 0 '; Destination X
$dst _y = ' 0 '; Destination y
$DST _im = Imagecreatetruecolor ($src _w, $src _h);
$white = Imagecolorallocate ($dst _im, 255, 255, 255);
Imagefill ($dst _im, 0, 0, $white);
Imagecopy ($dst _im, $src _im, $dst _x, $dst _y, $src _x, $src _y, $src _w, $src _h);
Header ("Content-type:image/png");
Imagepng ($dst _im);
Imagedestroy ($dst _im);

9, check whether the website is down

function Visit ($url) {
$agent = "mozilla/4.0" (compatible; MSIE 5.01; Windows NT 5.0) "; $ch =curl_init ();
curl_setopt ($ch, Curlopt_url, $url);
curl_setopt ($ch, curlopt_useragent, $agent);
curl_setopt ($ch, Curlopt_returntransfer, 1);
curl_setopt ($ch, Curlopt_verbose,false);
curl_setopt ($ch, Curlopt_timeout, 5);
curl_setopt ($ch, Curlopt_ssl_verifypeer, FALSE);
curl_setopt ($ch, curlopt_sslversion,3);
curl_setopt ($ch, Curlopt_ssl_verifyhost, FALSE);
$page =curl_exec ($ch);
echo Curl_error ($ch);
$httpcode = Curl_getinfo ($ch, Curlinfo_http_code);
Curl_close ($ch);
if ($httpcode >=200 && $httpcode <300) return true;
else return false;
}
if (Visit ("http://www.google.com"))
echo "Website OK". n ";
Else
echo "Website down";

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