Referral to the code you use most often in reference programming php.nen webbsite additional knowledge for you.

1. Send Mail using mail function in PHP

01 $to = "admin@user.vn";
02 $subject = "User.vn";
03 $body = "Body of your message here you can use HTML too. e.g.
Bold ";
04 $headers = "From: Peter";
05 $headers .= "Reply-To: info@yoursite.com";
06 $headers .= "Return-Path: mailto:info@yoursite.com";
07 $headers .= "X-Mailer:PHP5";
08 $headers .= 'MIME-Version: 1.0";
09 $headers .= 'Content-type: text/html; charset=iso-8859-1";
10 mail($to,$subject,$body,$headers);

2. Base64 Encode and Decode String in PHP

01 function base64url_encode($plainText) {
02 $base64 = base64_encode($plainText);
03 $base64url = strtr($base64, '+/=', '-_,');
04 return $base64url;
05 }
06
07 function base64url_decode($plainText) {
08 $base64url = strtr($plainText, '-_,', '+/=');
09 $base64 = base64_decode($base64url);
10 return $base64;
11 }

3. Get Remote IP Address in PHP

1 function getRemoteIPAddress() {
2 $ip = $_SERVER['REMOTE_ADDR'];
3 return $ip;
4 }

Nếu người truy cập web cố tình dấu địa chỉ ip này bằng proxy thì sử dụng code sau :

Trích:

01 function getRealIPAddr()
02 {
03 if (!empty($_SERVER['HTTP_CLIENT_IP'])) //check ip from
04 {
05 $ip=$_SERVER['HTTP_CLIENT_IP'];
06 }
07 elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
08 //to check ip is pass from proxy
09 {
10 $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
11 }
12 else
13 {
14 $ip=$_SERVER['REMOTE_ADDR'];
15 }
16 return $ip;
17 }

4. Seconds to String

01 function secsToStr($secs) {
02 if($secs>=86400){$days=floor($secs/86400);$secs=$secs%86400;
03 $r=$days.' day';
04 if($days<>1){$r.='s';}if($secs>0){$r.=', ';}}
05 if($secs>=3600){$hours=floor($secs/3600);$secs=$secs%3600;
06 $r.=$hours.' hour';
07 if($hours<>1){$r.='s';}if($secs>0){$r.=', ';}}
08 if($secs>=60){$minutes=floor($secs/60);$secs=$secs%60;
09 $r.=$minutes.' minute';
10 if($minutes<>1){$r.='s';}if($secs>0){$r.=', ';}}
11 $r.=$secs.' second';if($secs<>1){$r.='s';}
12 return $r;
13 }

5. Email validation snippet in PHP

Trích:

1 $email = $_POST['email'];
2 if(preg_match("~([a-zA-Z0-9!#$%&'*+-/=?^_`{|}~])@
3 ([a-zA-Z0-9-]).([a-zA-Z0-9]{2,4})~",$email)) {
4 echo 'This is a valid email.';
5 } else{
6 echo 'This is an invalid email.';
7 }

6. Parsing XML in easy way using PHP

01 //this is a sample xml string
02 $xml_string="
03
04
05 ben
06 A
07
08
09 h2o
10 K
11
12 ";
13
14 //load the xml string using simplexml function
15 $xml = simplexml_load_string($xml_string);
16
17 //loop through the each node of molecule
18 foreach ($xml->molecule as $record)
19 {
20 //attribute are accessted by
21 echo $record['name'], ' ';
22 //node are accessted by -> operator
23 echo $record->symbol, ' ';
24 echo $record->code, '
';
25 }

7. Database Connection in PHP

01 if(basename(__FILE__) == basename($_SERVER['PHP_SELF'])) send_404();
02 $dbHost = "localhost"; //Location Of Database usually its localhost
03 $dbUser = "xxxx"; //Database User Name
04 $dbPass = "xxxx"; //Database Password
05 $dbDatabase = "xxxx"; //Database Name
06
07 $db = mysql_connect("$dbHost", "$dbUser", "$dbPass")
08 or die ("Error connecting to database.");
09 mysql_select_db("$dbDatabase", $db)
10 or die ("Couldn't select the database.");
11
12 # This function will send an imitation 404 page if the user
13 # types in this files filename into the address bar.
14 # only files connecting with in the same directory as this
15 # file will be able to use it as well.
16 function send_404()
17 {
18 header('HTTP/1.x 404 Not Found');
19 print ''."n".
20 ''."n".
21 ''."n".
22 ''."n".
23 '

Not Found

'."n".
24 'The requested URL '.
25
26 str_replace(strstr($_SERVER['REQUEST_URI'], '?'),
27 '', $_SERVER['REQUEST_URI']).
28 ' was not found on this server.
'."n".
29 ''."n";
30 exit;
31 }
32
33 # In any file you want to connect to the database,
34 # and in this case we will name this file db.php
35 # just add this line of php code (without the pound sign):
36 # include"db.php";

8. Creating and Parsing JSON data in PHP

1 $json_data = array ('id'=>1,'name'=>"rolf",'country'=>'russia',
2 "office"=>array("google","oracle"));
3 echo json_encode($json_data);

Use array: $json_string=’{“id”:1,”name”:”rolf”, ”country”:”rus sia”,”office”: ["google","oracle"]} ‘;

1 $obj=json_decode($json_string);
2 //print the parsed data
3 echo $obj->name; //displays rolf
4 echo $obj->office[0]; //displays google

9. Process MySQL Timestamp in PHP

1 $query = "select UNIX_TIMESTAMP(date_field) as mydate
2 from mytable where 1=1";
3 $records = mysql_query($query) or die(mysql_error());
4 while($row = mysql_fetch_array($records))
5 {
6 echo $row;
7 }

10. Generate An Authentication Code in PHP

01 # This particular code will generate a random string
02
03 # that is 25 charicters long 25 comes from the number
04
05 # that is in the for loop
06
07 $string = "abcdefghijklmnopqrstuvwxyz0123456789";
08
09 for($i=0;$i<25;$i++){
10
11 $pos = rand(0,36);
12
13 $str .= $string{$pos};
14
15 }
16
17 echo $str;
18
19 # If you have a database you can save the string in
20
21 # there, and send the user an email with the code in
22
23 # it they then can click a link or copy the code
24
25 # and you can then verify that that is the correct email
26
27 # or verify what ever you want to verify

11. Date format validation in PHP

01 function checkDateFormat($date)
02 {
03 //match the format of the date
04 if (preg_match ("/^([0-9]{4})-([0-9]{2})-([0-9]{2})$/",
05 $date, $parts))
06 {
07 //check weather the date is valid of not
08 if(checkdate($parts[2],$parts[3],$parts[1]))
09 return true;
10 else
11 return false;
12 }
13 else
14 return false;
15 }

12. HTTP Redirection in PHP

1 header('Location: 'http://you_stuff/url.php');

13. Directory Listing in PHP

01 function list_files($dir)
02 {
03 if(is_dir($dir))
04 {
05 if($handle = opendir($dir))
06 {
07 while(($file = readdir($handle)) !== false)
08 {
09 /*pesky windows, images..*/
10 if($file != "." && $file != ".." && $file != "Thumbs.db")
11 {
12 echo '
13 '.$file.'
'."";
14 }
15 }
16 closedir($handle);
17 }
18 }
19 }
20 /*
21 To use:
22
23 24
25 list_files("images/");
26
27 ?>
28
29 */

14. Browser Detection script in PHP

1 $useragent = $_SERVER ['HTTP_USER_AGENT'];
2 echo "Your User Agent is: " . $useragent;

15. Unzip a Zip File

01 function unzip($location,$newLocation){
02 if(exec("unzip $location",$arr)){
03 mkdir($newLocation);
04 for($i = 1;$i< count($arr);$i++){
05 $file = trim(preg_replace("~inflating: ~","",$arr[$i]));
06 copy($location.'/'.$file,$newLocation.'/'.$file);
07 unlink($location.'/'.$file);
08 }
09 return TRUE;
10 }else{
11 return FALSE;
12 }
13 }

Use the code as following:

1 include 'functions.php';
2 if(unzip('zipedfiles/test.zip','unziped/myNewZip'))
3 echo 'Success!';
4 else
5 echo 'Error';

From by: http://dangkyoffice.com | http://cenrea.com