Share 10 common PHP Codes

This article collects time-frame code frequently used in PHP development, including Email, decompression, 64-bit encoding, and JSON parsing. For more information about common php code, see

This article collects time-frame code frequently used in PHP development, including Email, decompression, 64-bit encoding, and JSON parsing. For more information about common php code, see

1. Use the PHP Mail function to send an Email

$ To = "viralpatel.net@gmail.com"; $ subject = "VIRALPATEL.net"; $ body = "Body of your message here you can use HTML too. e.g. <br> <B> Bold </B> "; $ headers =" From: Peter \ r \ n "; $ headers. = "Reply-To: info@yoursite.com \ r \ n"; $ headers. = "Return-Path: info@yoursite.com \ r \ n"; $ headers. = "X-Mailer: PHP5 \ n"; $ headers. = 'mime-Version: 100 '. "\ n"; $ headers. = 'content-type: text/html; charset = iso-8859-1 '. "\ R \ n"; mail ($ to, $ subject, $ body, $ headers );? >

2. 64-bit encoding and decoding in PHP

Function base64url_encode ($ plainText) {$ base64 = base64_encode ($ plainText); $ base64url = strtr ($ base64, '+/= ','-_,'); return $ base64url;} function base64url_decode ($ plainText) {$ base64url = strtr ($ plainText, '-_,', '+/= '); $ base64 = base64_decode ($ base64url); return $ base64 ;}

3. Obtain the remote IP Address

Function getRealIPAddr () {if (! Empty ($ _ SERVER ['HTTP _ CLIENT_IP ']) // check ip from share internet {$ ip = $ _ SERVER ['HTTP _ CLIENT_IP'];} elseif (! Empty ($ _ 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 ;}

4. Date formatting

Function checkDateFormat ($ date) {// match the format of the dateif (preg_match ("/^ ([0-9] {4 }) -([0-9] {2})-([0-9] {2}) $/", $ date, $ parts )) {// check weather the date is valid of notif (checkdate ($ parts [2], $ parts [3], $ parts [1]) return true; elsereturn false ;} elsereturn false ;}

5. verify Email

$ Email = $ _ POST ['email ']; if (preg_match ("~ [A-zA-Z0-9! # $ % & '* +-/=? ^ _ '{|} ~]) @ ([A-zA-Z0-9-]). ([a-zA-Z0-9] {2, 4 })~ ", $ Email) {echo 'this is a valid email. ';} else {echo 'this is an invalid email .';}

6. Easily Parse XML in PHP

// This is a sample xml string $ xml_string = "<? Xml version = '1. 0 '? > <Moleculedb> <molecule> <symbol> ben </symbol> <code> A </code> </molecule> <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 moleculeforeach ($ xml-> molecule as $ record) {// attribute are accessted by echo $ record ['name'], ''; // node are accessted by-> operator echo $ record-> symbol ,''; echo $ record-> code, '<br/> ';}

7. Database Connection

<? Phpif (basename (_ FILE _) = basename ($ _ SERVER ['php _ SELF ']) send_404 (); $ dbHost = "localhost "; // Location Of Database usually its localhost $ dbUser = "xxxx"; // Database User Name $ dbPass = "xxxx"; // Database Password $ dbDatabase = "xxxx "; // Database Name $ db = mysql_connect ("$ dbHost", "$ dbUser", "$ dbPass") ordie ("Error connecting to database. "); mysql_select_db (" $ dbDatabase ", $ db) or die (" Couldn't sele Ct the database. "); # This function will send an imitation 404 page if the user # types in this files filename into the address bar. # only files connecting with in the same directory as this # file will be able to use it as well. function send_404 () {header ('HTTP/1.x 404 Not Found '); print' <! Doctype html public "-// IETF // dtd html 2.0 // EN"> '. "n ". '

8. Create and parse JSON data

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

9. Process MySQL Timestamp

$ Query = "select UNIX_TIMESTAMP (date_field) as mydate from mytable where 1 = 1"; $ records = mysql_query ($ query) or die (mysql_error ()); while ($ row = mysql_fetch_array ($ records) {echo $ row ;}

10. decompress the Zip file

<? Php 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. 'http: // www.jb51.net/'.w.file,$newlocation.'http://www.jb51.net/'.w.file); unlink ($ location. 'http: // www.jb51.net/'.w.file);} return TRUE;} else {return FALSE ;}}? > // Use the code as following: <? Phpinclude 'functions. php'; if (unzip ('zipedfiles/test.zip ', 'unziped/myNewZip') echo 'success! '; Else echo 'error ';? >

Common PHP functions are as follows:

1. PHP string

String declaration variable = ''or" "(single quotation marks are generally used, because it is easier to write)

$ Str = 'Hello php ';
Echo $ str;

Strpos calculates the position of a character in a string (starting from 0)

$ Str = 'Hello php ';
Echo strpos ($ str, 'O'); // calculates the position of the character in the string.
Echo'
';
Echo strpos ($ str, 'ph ');

Substr truncated string

$ Str = 'Hello php'; // capture string $ str1 = substr ($ str, 2, 3); // start from 2, truncate a string of 3 echo $ str1;

If the length parameter is not input, it is intercepted from the specified position until the end of the string.

Str_split: Splits a string with a fixed length (the default length is 1)