Use of PHP variable functions _php tips

PHP supports the concept of variable functions. This means that if a variable name is followed by parentheses, PHP will look for a function with the same name as the value of the variable and try to execute it. Variable functions can be used to

Tell you how to modify nginx and php file upload size limit _php tips

1. Modify three items in the PHP configuration file: Vim/usr/local/php/etc/php.ini (1) post_max_size = 50M #PHP可接受的最大POST数据 (2) upload_max_filesize = 50M #文件上传允许的最大值 (3) Max_execution_time = #每个脚本的最大执行时间, seconds (0 is not limited, do not

PHP get current page URL function instance _php tips

This article describes the PHP to get the current page URL function example, share for everyone to reference. The implementation methods are as follows: In PHP, there is no default function to get the URL of the current page, so today we're going

PHP Custom APK installation package Instance _php tips

The example of this article describes the PHP custom APK installation package method, share for everyone to reference. The implementation methods are as follows: As we all know, the APK format installation file is an Android Smart system

PHP hidden character 65279 (utf-8 BOM header) Problem _php tips

Today in csdn see a PHP output blank stealth character 65279 problem, found on the Internet under, send this 65279 characters is PHP to mark the file is utf-8 encoded, the output will be output together to the client, resulting in the client if

PHP scaling GIF and PNG map transparent background to black solution _php tips

Work needs to scale some GIF and then go to Imagecopymerge, but found that the use of Imagecreatetruecolor and imagecopyresampled later found that the background map is not right, the original transparent background image into black, It was later

Examples of Get and post methods using HTTP calls in PHP _php tips

The function used is Curl_init, curl_setopt, Curl_exec,curl_close. The default is the Get method, which allows you to choose whether to use headers: $ch = Curl_init (); curl_setopt ($ch, Curlopt_url, "$url"); curl_setopt ($ch, Curlopt_timeout,

Linux Install PHP memcached client _php Tips

The memcached client installation steps for installing PHP are described below 1. Download and install libmemcached clientWebsite address: http://libmemcached.org/libMemcached.html $wget-C

Parse the difference between PHP functions method_exists () and is_callable () _php Skills

What is the difference between PHP function method_exists () and is_callable ()? In the design process of PHP object-oriented object, we often need to call a certain method to belong to a certain class when the judgment, commonly used methods have

Use PHP to get the current URL path function and server variable _php tips

PHP Gets the function and server variables for the current URL path: Code: Copy Code code as follows: $path =/usr/opt/. /ECT/ABCD; echo $_server[' Document_root ']. "   "; Get the server document root variable (depending on the

PHP Accelerator eaccelerator configuration parameters, API detailed _php tips

It is also able to optimize scripts to speed up their execution. Using Eaccelerator can reduce server load and increase the execution time of PHP code. Eaccelerator configuration options: Copy Code code as follows: Zend_extension_ts=

PHP Mail Send class Phpmailer Usage example detailed _php skill

The example of this article describes the Phpmailer usage of the PHP mail sending class, and details its detailed operation steps. Share to everyone for your reference. The specific steps are as follows: 1. Install SendMail on the server

PHP Built-in filters filter use instance _php tips

In this section, let's look at a less common but powerful PHP feature: FILTERS, which can be used to validate (validation) and error correction (sanitization)When a data source contains unknown or indeterminate data, it becomes useful, at most, for

parsing PHP Efficient writing (explain why) _php skills

1. Try to be static:If a method can be static, then declare it static, speed can be increased by 1/4, even when I test, this improved nearly three times times.Of course, this test method needs to be performed above level 100,000, the effect is

A way to figure out the path to the PHP configuration file php.ini _php tips

Recently, there are Buboyu asked php.ini which directory? or modify the php.ini after why not effective? Based on the above two questions, I think it is necessary to teach the friends who have just contacted PHP how to find the path directory of PHP

Simple analysis of PHP's ASCII code conversion class _php skill

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Copy Code code as follows: Class ASCII { function decode ($STR) { Preg_match_all ("/(d{2,5})/", $str, $a); $a = $a [0]; foreach ($a as $dec) { if ($dec { $utf. = Chr ($DEC); } else if ($dec { $utf. = Chr (($dec-($dec% 64))/64);

PHP based on array implementation of pagination function Example _php skill

Paging function is a very common function of PHP programming, unlike in the past, today This article describes PHP is based on the array implementation of the paging function. About the paging function of an array, the advantage of using an array

PHP Regular Replacement function preg_replace and Preg_replace_callback use summary _php tips

When writing the PHP template Engine tool class, a previously used regular substitution function of preg_replace (), plus the regular modifier/e, can perform powerful callback functions that implement template engine compilation (in fact, string

A strict PHP session timeout time setting method _php Tips

Recently, a PHP project used to limit the logon time function, such as the user login system after 60 Minutes if there is no operation to automatically exit, I searched the network has collected the following methods available for reference. The

PHP batch detection and removal of file BOM header code instances _php tips

ord

The following code for PHP to remove all file BOM information for the current directory and subdirectories, create a new file, put it down in the root directory, and then access the browser. "; else {$dirname = $basedir. "/" . $file;

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