1, first, look at the realization of the effect
2, the implementation of the whole class
Class Page {private $total;//Total quantity private $limit;//return MySQL limit statement private $pageStart;//The starting value is private $pageStop;// The
Generate thumbnails of the PHP class, a new file is called thumbnailimage.php, the file name should not be capitalized.
Define (' Max_img_size ', 100000);
Supported Image types
Define (' Thumb_jpeg ', ' image/jpeg '
Introduction to PHP processing Excel steps
Encounter problems
Often at work, there is a need to export a database table as Excel or import Excel into a database table. This demand has been realized early, in order to facilitate the import and export,
a few days ago learned some knowledge of PHP encryption, now summarize
Several forms of encryption in PHP
MD5 () encryption algorithm
Crypt () encryption algorithm
SHA1 () encryption algorithm
URL Encoding encryption technology
BASE64 Coded
The difference between include and require 1, the way the load fails to handle different include and require in addition to the way in which files are introduced, the biggest difference is that include generates a warning when the file is introduced
The following PHP error was encountered:parse Error:syntax error, unexpected $end in script.php the line xx after debugging found that the row that produced the error is a row in the middle of the file
$str. = ">\n";
Copy
Install Apache:
Yum Install httpd Httpd-devel
To start Apache:
/ETC/INIT.D/HTTPD start
Enter the server's IP address at this time, you should see the Apache service page, the port does not lose, Apache default is to use 80 port
Install MySQL:
Booleans is used to represent the concepts of true and false. They is most often used for testing if a statement is true or false and they ' ll play a bigger role when we discuss Logica L Expressions. Note that there is a difference between Boolean
In this paper, a simple way to read PDF pages in PHP is described. Share to everyone for your reference, as follows:
Or foreigners more honest, in the foreigner's website found such a method,
I have written a function and then write the function
To achieve a calculation of the time difference in the code, the number of days, I remember in other programs to see the conversion into years and days, so began to write a bit, in fact, is very simple, is a few conversion, But in the monthly
Download some files in PHP, usually to hide the file's true download address only need this, otherwise this will increase the burden on the server, rather than directly provide the address of the software.A simple php file download source code,
1. Error resolution that cannot be refreshed with the page refresh:
Modify source Code vendor/yiisoft/yii2/captcha/captchavalidator.php
/** * @inheritdoc * * Public functionclientvalidateattribute($object, $attribute, $view)
Laravel is a simple, elegant PHP Web development Framework (PHP Web framework). It frees you from the messy code of noodles, and it helps you build a perfect web app, and every line of code can be concise and expressive.Functional characteristics1.
PHP System class functionsAssert function: Check if the assertion declaration is incorrectextension_loaded function: Check if PHP extension is loadedGet_cfg_var function: Gets the value of the PHP configuration optionGet_current_user function: Gets
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