PHP

A switch statement is like a series of if statements to the same expression. In many times, you want to compare the same variable (or expression) with many different values, and perform different pieces of the program based on different comparison

1. Arithmetic operators The code is as follows Copy Code +: $a + $b plus $a plus $b-: $a-$b minus $a minus $b*: $a * $b multiply by $a times $b/: $a/$b except $a divided by $b%: $a% $b modulo $a divided by the remainder

?if ($nickname = = "") {Print " topic? ";}else if ($key = = "") {Print " keywords? ";}else if ($note = = "") {Print " content? ";}else{print "";$t = Date (Y-year m-month D-day); $note = Str_replace ("$note = Str_replace (">", ">", $note);$note =

Make a paging display Database Tutorial Connections The code is as follows Copy Code ?$conn =mysql Tutorial _connect ("127.0.0.1", "", "");mysql_select_db ("Shop");?> The key is to use the limit in the SQL

/*for (EXPR1; expr2; expr3) {statement}The following example is written with a for loop The code is as follows Copy Code for ($i = 1; $i echo "Www.111cn.net prompts you that this is the first". $i. " Secondary cycle ";}?

php method to get checkbox value       check one         Check two Check three Check four ;? if ($_post) {   $value = $_post[' checkbox ';  echo ' you chose: '. Implode (', ', $value);    //because of

      title             Content                 . if ( $_post) {   $file = ' list.txt ';   $array = $_post;   $content = "title:". $array [' title ']. ' contents: '. $array [' content '].CHR (13);  if (file_exists

MIME decoding class(Author: Chen Junqing October 24, 2000)A class that implements MIME decodingDecode ($ head = null, $ body = null, $ content_num =-1) is used to decode this class. For processing convenience, you must enter a two-character array,

If ($ EMAIL_INC) return;$ EMAIL_INC = "defined ";Define ("SmtpPort", 25 );Class Pop3 {Var $ subject; // email subjectVar $ from_email; // sender addressVar $ from_name; // sender's nameVar $ to_email; // recipient addressVar $ to_name; // recipient

It is very easy to obtain the current domain name. The code is as follows:Copy code // Obtain the current domain name:Echo $ _ SERVER ['server _ name'];// Obtain the source URL, that is, click the previous URL on this page.Echo $ _ SERVER ["HTTP_

Abstract class:It is used for inheritance and cannot be instantiated. It is used for standardization. Subclass must implement all abstract methods of the parent class.Interface:It can be understood as a stricter abstract class.First, like an

Example The code is as follows:Copy code Header ("Content-Type; text/html; charset = utf-8 ");Class DownFile {Public static function File ($ _ path, $ file_name ){// Solve Chinese garbled characters$ _ Path = $ _ path. $ file_name;// Determine

1. Add elements to a one-dimensional array$ ArrayList = ArrayListay ();Array_push ($ ArrayList, el1, el2... eln );But there is actually a more direct and convenient way: The code is as follows:Copy code $ ArrayList = ArrayListay ();$ ArrayList []

Knowledge points to be learned in the early stageMove_uploaded_file () file upload function The code is as follows:Copy code If (move_uploaded_file ($ _ FILES ["filename"] ["tmp_name"]){Echo 'file uploaded successfully ';} $ _ FILES php global

Example. Explode The code is as follows:Copy code Function checkstr ($ str ){$ Needle = "B"; // determines whether the string contains.$ Tmparray = explode ($ needle, $ str );If (count ($ tmparray)> 1 ){Return true;} Else {Return false; } } The

Use of the PHP glob function: glob-find the file path that matches the patternExample The code is as follows:Copy code $ FileList = glob ('*.*');For ($ I = 0; $ I Echo $ fileList [$ I]. ' ';}$ FileList2 = glob ('images /*');For ($ I = 0; $ I

In PHP, there is no default Function to get the URL of the current page. So today we will introduce a PHP Function for getting the complete URL of the current page in PHP.CodeThe function code is as follows. You only need to use curPageURL () for

Example The code is as follows:Copy code $ PostInfo ['answer2'] = 'Yes, commercial loans can be shared by 36%, and provident fund loans can be shared by 16% ||| you can extract the balance from your account for down payment, then, each month,

Let's first look at the Directory Traversal The code is as follows:Copy code Function tree ($ directory){ $ Mydir = dir ($ directory );Echo " n ";While ($ file = $ mydir-> read ()) { If (is_dir ("$ directory/$ file") AND ($ file! = ".") AND ($