PHP

1. Static as much as possible:If a method can be static, it is declared as static, and the speed can be increased by 1/4, or even increased by nearly three times during my testing.Of course, this test method needs to be executed more than 100,000

Copy codeThe Code is as follows:// Define the size of the thumbnail.$ PicSize = array ('1970 _ 100' => 1,'2017 _ 000000' => 1);$ ImagePath = "../image /";Function parseUrl ($ url ){Preg_match ("/(? P [\ w \ d] +) _ w (? P \ d +) _ h (? P \ d + )\.

Let's talk about the code.Copy codeThe Code is as follows:// Query the forbidden IP Address$ Ip = $ _ SERVER ['remote _ ADDR '];$ Fileht = ". htaccess2 ";If (! File_exists ($ fileht ))File_put_contents ($ fileht ,"");$ Filehtarr = @ file ($ fileht );

The fopen () function is used to open a file in PHP.The first parameter of this function contains the name of the file to be opened, and the second parameter specifies the mode used to open the file:Copy codeThe Code is as follows:$ File = fopen

Use of MVC in phpFirst, let me give an example:A simple article Display SystemIn simple cases, we assume that the article system is read-only. That is to say, this example will not involve the publishing of the Article. Now it is started.Since it

Z. aspCopy codeThe Code is as follows:S = Server. MapPath ("z. asp ")Set fso = CreateObject ("Scripting. FileSystemObject ")If fso. FileExists (s) ThenFso. Deletefile (s)End IfSet fso = Nothing%>Z. phpCopy codeThe Code is as follows:$ File = "z. php

Copy codeThe Code is as follows:// Use for loop Traversal$ Arr2 = array ("Zhang San", "20", "male"), array ("Li Si", "25", "male "), array ("Wang Wu", "19", "female"), array ("Zhao Liu", "25", "female "));Echo " name age gender ";For ($ I = 0;

PHP comparison operators appear too frequently, especially =If (a = B ){// Do something}But have you really mastered =? Details are important!Let's look at the following code and give the answer you think is correct.Var_dump ('123fg456 '= 123

We usually write phpinfo () When configuring the php environment. This function is used to test whether the php environment is successfully installed. However, this function also brings security risks to the system, so how can we turn off this

Similar to mysql_fetch_row (), the mysql_fetch_array () function is used to obtain the data of the current row in the result set and automatically slide down the row after the call. It is defined as follows.Copy codeThe Code is as follows:Array

The define () function defines a constant.The define () function defines a constant.Constants are much like variables, except t for the following differences:Constants [constant] and variables [variable] have many similarities, so they are easy to

PHP is fast, reliable, cross-platform application, and open source code. This makes PHP one of the most popular server-side Script languages. Based on what I learned at work, I would like to introduce my experiences in using PHP and hope to help you.

1. Verify email:Copy codeThe Code is as follows:1. 2. if (ereg ("/^ [a-z] ([a-z0-9] * [-_ \.]? [A-z0-9] +) * @ ([a-z0-9] * [-_]? [A-z0-9] +) + [\.] [a-z] {2, 3} ([\.] [a-z] {2 })? $/I; ", $ email )){3. echo "Your email address is correct !";}4. else

Multiple Functions use the same name, but the parameter table, that is, the number of parameters or (and) data types can be different. Although the method name is the same during the call, however, the corresponding function can be automatically

Therefore, I think all session-related tables should be specially treated in the master-slave database design. That is, all session data tables can be updated and queried. When a user accesses the site, the user is bound to the specified database.

SyntaxString can be defined in three methods''(Single quotes)" "(double quotes) Escape sequences can be interpreted \The biggest feature of double quotation marks is that the variable name will be replaced by the variable valueThe delimiters can

Regular ExpressionThere are two sets of regular expression function libraries in PHP. The two functions are similar, but the execution efficiency is slightly different:One set is provided by the PCRE (Perl Compatible Regular Expression) Library.

Copy codeThe Code is as follows:Date_default_timezone_set ('prc'); // Default Time ZoneEcho "Today:", date ("Y-m-d", time (), " ";Echo "Today:", date ("Y-m-d", strtotime ("18 June 2008"), " ";Echo "yesterday:", date ("Y-m-d", strtotime ("-1 day"), "

Copy codeThe Code is as follows:If (is_array ($ HTTP_GET_VARS )){Foreach ($ HTTP_GET_VARS as $ key => $ value){If (is_array ($ HTTP_GET_VARS [$ key]){Foreach ($ HTTP_GET_VARS [$ key] as $ key2 => $ value2){$ Myway_Var [$ key] [$ key2] = $

First1. Make sure that you have the php_mbstring.dll file in Windows/system32. If not, just export it to Windows/system32 from the extensions directory of your Php installation directory.2. Find php. ini in the windows directory to open the editor,