Share 10 common PHP codes and 10 php_PHP tutorials

Share 10 common PHP code segments and 10 php segments. Share 10 common PHP code segments and 10 common php code segments. This article brings together 10 common PHP code segments, including Email, 64-bit encoding and decoding, decompression, 64-bit encoding, parsing JSON, etc. we hope to share 10 common PHP code segments and 10 php code segments.

This article brings together ten pieces of code frequently used in PHP development, including Email, 64-bit encoding and decoding, decompression, 64-bit encoding, and JSON parsing. We hope this will help you.

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: 1.0' . "\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$xml_string="﹤?xml version='1.0'?﹥﹤moleculedb﹥ ﹤molecule name='Benzine'﹥ ﹤symbol﹥ben﹤/symbol﹥ ﹤code﹥A﹤/code﹥ ﹤/molecule﹥ ﹤molecule name='Water'﹥ ﹤symbol﹥h2o﹤/symbol﹥ ﹤code﹥K﹤/code﹥ ﹤/molecule﹥﹤/moleculedb﹥";//load the xml string using simplexml function$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", "$dbPass") or    die ("Error connecting to database.");mysql_select_db("$dbDatabase", $db) or die ("Couldn't select the database.");# This function will send an imitation 404 page if the user# types in this files filename into the address bar.# only files connecting with in the same directory as this# file will be able to use it as well.function send_404(){ header('HTTP/1.x 404 Not Found'); print '﹤!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"﹥'."n". '﹤html﹥﹤head﹥'."n". '﹤title﹥404 Not Found﹤/title﹥'."n". '﹤/head﹥﹤body﹥'."n". '﹤h1﹥Not Found﹤/h1﹥'."n". '﹤p﹥The requested URL '. str_replace(strstr($_SERVER['REQUEST_URI'], '?'), '', $_SERVER['REQUEST_URI']). ' was not found on this server.﹤/p﹥'."n". '﹤/body﹥﹤/html﹥'."n"; exit;}# In any file you want to connect to the database,# and in this case we will name this file db.php# just add this line of php code (without the pound sign):# include"db.php";?﹥

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.'/'.$file,$newLocation.'/'.$file); unlink($location.'/'.$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)

$ Str = 'Hello php'; // The split string $ result = str_split ($ str); // Save the result to an array print_r ($ result ); // input an array echo using print_r'
'; $ Result1 = str_split ($ str, 2); print_r ($ result1 );

Explode (delimiter, string to be split) is separated by space

$str = 'Hello PHP Java C# C++';$result = explode(' ',$str);print_r($result);

String connection

$ Str = 'Hello PHP Java C # C ++ '; // string join $ num = 100; $ str1 = $ str .'
Objective-C '. $ num; echo $ str1; echo'
'; $ Str2 = "$ str
Objective-C $ num "; // A simple echo $ str2 statement;

This article brings together ten pieces of code frequently used in PHP development, including Email, 64-bit encoding and decoding, decompression, 64-bit encoding, parsing JSON, etc...