PHP Tutorials

Hegel has a famous saying: existence is reasonable. With this as an argument, the use of static classes must have its rationality. But extremes meet, once the code is too dependent on static classes, its deterioration of the outcome is inevitable.

1. Bad support for recursionRecursion is a mechanism by which a function calls itself. This is a powerful feature that makes some complex things very simple. One example of using recursion is a quick sort (quicksort). Unfortunately, PHP is not good

Similar to dreamhost such as host service providers, is to display the use of fopen. Use of PHP's curl can be implemented to support FTP, FTPS, HTTP htpps SCP SFTP TFTP, TELNET DICT file and LDAP. Curl supports SSL certificates, HTTP POST, http PUT,

Recommend a simple and practical zoom picture tool SimpleImage, refer to http://www.white-hat-web-design.co.uk/blog/resizing-images-with-php/ How to use: Set wide height, unequal scaling Copy CodeThe code is as follows: Include ('

Use "= = =" To judge, as to the difference between it and "= =", in short, the former emphasizes that the "identical (same, identical)" type is also required, the latter requires "equal (equal)", the value of the same is OK. Or use strcmp to judge,

Yesterday encountered a problem, using the YII framework to write PHP script, more than 1 million db of data export, run, success. However, when running to No. 490000, the script terminates, prompting the error "File size limit exceeded", so Google,

Copy CodeThe code is as follows: Echo Implode (",", Hextorgb ("#F7F7DA")). " "; echo Rgbtohex ("RGB (247,247,218)")?> function Hextorgb ($colour) {if ($colour [0] = = ' # ') {$colour = substr ($colour, 1);}if (strlen ($colour) = = 6) {List ($r,

What is the difference between PHP function method_exists () and is_callable ()? In the design process of the PHP face object, we often need to make a judgment when calling a method whether it belongs to a class, commonly used methods are

1, the input information to verify the class (mainly used to verify the user name, password, duplicate password, mailbox, can add other functions) Copy CodeThe code is as follows: /** * Validator for Register. */ Final class Registervalidator

Strip_tagsRemove the HTML and PHP tags. Syntax: string strip_tags (String str); return value: String Function type: Data processing Content Description This function removes any HTML and PHP tag strings contained in the string. If the string of HTML

The relevant IP settings used in this tutorial are modified in your environment. Update apt-get before using, because the server is basically a bare system Apt-get Update; Apt-get upgrade; 1 We use the root account to install, first switch to the

Recently, carefully read a lot about the cache of the article, there are program-level, non-program-level, memory cache, file cache and so on, feeling a lot of benefits, so to consolidate knowledge, strengthen the memory, oneself also move to write

Failed to open stream:no such file or directory problem Daquan, this article by the help of the small collection and collation, please retain the source when reproduced. Case one: (Failed to open stream:no such file or directory) the directory

　　 A home for the guests ( bkjia.com ) TutorialToday, the fire small in the blog park to see such an example of "ajax+php mouse drag layer to any location and save in real time," very practical, especially reproduced to you webmaster, I hope to

Interface issuesThe main thing about PHP calling interfaces is using curl to crawl information Copy CodeThe code is as follows: $ch = Curl_init (); curl_setopt ($ch, Curlopt_url, $url); URL address curl_setopt ($ch, Curlopt_post, true); Whether the

PHP Warning: Strtotime (): It is not safe for rely on the system ' s timezone settings. You is *required* to use the Date.timezone setting or the Date_default_timezone_set () function. In case you used any of those methods and you is still getting

demo.php: Copy CodeThe code is as follows: /** * Read SQL file and write to database * @version 1.01 demo.php */ Class DBManager { var $dbHost = '; var $dbUser = '; var $dbPassword = '; var $dbSchema = '; function __construct ($host, $user,

In recent days are doing a small CMS, with the picture upload, want to facilitate CodeIgniter upload class to achieve, but there are many problems in testing, I have to pay attention to the place to share! Copy CodeThe code is as follows: /*

Use session and cookie to save user login information at the same time 1. Database Connection Configuration page: connectvars.php Copy CodeThe code is as follows: Location of the database Define (' Db_host ', ' 127.0.0.1 '); User name Define (' Db_

Ask: I used the post for the method, but why not use the Get method? Let's take a look at the difference between post and get pass values: When the post transmits data, it does not need to be displayed in the URL, and the Get method is