I. Submission of the form:The array that receives common form information is: $_get $_post $_requestThe functions that receive file upload information are: $_filesThe form cannot have the same name when you do multiple forms of uploading files at
The code is as follows:Copy code /* Use PHP to collect remote images. Basic process:1. Obtain the image address of the target website.2. Read the image content.3. Create a path to save the image and name the image.4. Write the image content.5.
The total number of pages is a piece of wood with a certain length. The ruler slides on the block. On the premise that the two ends of the ruler cannot exceed the block: D. What we need to do is to find the starting point of the ruler on the block,
The effect is shown in the following figure.HTMLLike the previous article on this site that used raphael. js to draw a map of China, first load the raphael. js library file and the chinamapPath. js path file in the head section. The code is as
The code is as follows:Copy code $ Cmds = array (a, B, c, d );Foreach ($ cmds as $ cmd ){$ Pid = pcntl_fork ();If ($ pid =-1 ){Exit ("pid fork error "); } If ($ pid) {// master process segment to control the number of sub-processesStatic $ max =
The method is as follows: The code is as follows:Copy code $ Arr = array (............) ; // Assume that an array contains 10 thousand elements with repeated elements. $ Arr = array_flip ($ arr); // you can delete duplicate elements. What is
Get Response Headers, and then analyze it slowly.Specific Implementation methods are provided: The code is as follows:Copy code $ Header = get_headers ($ url, 1 );If (strpos ($ header [0], '2017 & prime;) | strpos ($ header [0], '2017 & prime ;))
The personal method is not bad: The code is as follows:Copy code Options + FollowSymLinksRewriteEngine onRewriteBase/posterRewriteCond $1! ^ (Index. php | images | robots.txt)RewriteCond % {REQUEST_FILENAME }! -FRewriteCond % {REQUEST_FILENAME }!
If you define variables and constants, how many aspects will you pay attention? You may think:• How to Define variables? What is the difference between variables and C?• Are variables case sensitive?• Are there other important PHP variables?• Are
Simple session creation The code is as follows:Copy code Session_start ();$ Username = "nostop ";Session_register ("username ");?> In this example, we registered a variable named username with the value of nostop to the session.Read
Return value after ComparisonIf str1 and str2 are equal, 0 is returned.If str1 is smaller than str2, return If str1 is greater than str2, return> 0 (but different timing 1, the specific value size depends on the actual situation ).Example The code
Before using this method, enable the php_mbstring.dll extension in php. ini and remove the semicolon before extension.Many methods to intercept Chinese strings do not support the number of Chinese characters,The following code can be implemented:
Example 1 The code is as follows:Copy code Function unique_array_2d ($ array2D, $ stkeep = false, $ ndformat = true){// Determine whether the primary array key is retained (the primary array key can be non-numeric)If ($ stkeep) $ stArr =
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