PHP

Summary of some SQL injection methods in php. SQL injection is to use your syntax or accept some bugs in data processing to crack the database, and then download your data or directly obtain your administrator to access some operations that affect

PHP obtains the URL code of the current page. In php, the method to obtain the url address of the current page is very simple. next I will summarize the examples of getting the complete url address using the relevant functions. PHP's pre-defined

Php implements two examples of getting the first letter of a Chinese character. There are many ways to get the first letter of a Chinese character. in this case, we usually need to split the Chinese character into pinyin, and then use substr to get

Some character methods in replacement strings in PHP are introduced. Replacing strings in php will all use the str_replace function. This function can also use regular expressions, the following small series will introduce some characters in the

PHP implements several examples of bubble sorting. Php bubble sorting implements data exchange and finds the largest and smallest values. Finally, it sorts the switch locations. this is the most widely used sorting method. Bubble sorting (Bubble php

Modify the PHP configuration file to upload large files (apacheng.pdf ). In php. in ini, if we do not modify the post_max_size and upload_max_filesize parameters, a maximum of 2 MB files can be uploaded by default. if the file size is dozens of MB

PHP cookie usage and precautions. Cookie is used to store information in the client browser. we can use cookies to record user-related information. for example, the webmaster's statistical code is implemented based on cookies and ip addresses, the

Php pseudo-static writing (apache pseudo-static rules ). In php, we can directly use php to process URLs for pseudo-static operations. However, this pseudo-static mode is not a standard and can be said to look like a commodity, but it is quite

Php implements the method of intercepting Chinese strings without garbled characters. Many php beginners can use the substr () function or the mb_substr () function to intercept characters. the first Chinese character must be garbled, and the second

PHP reads large file program code. PHP reads large files, which is different from reading general files. if your file reaches several hundred MB or GB, it may be slow or slow for common php to read files, next I will introduce some differences

Php generates a complete html static page instance. If you are an seo worker, you may want to convert all the php files into html pages. this will benefit the website ranking and reduce the apache load on the server, if you are an seo worker, you

Php checks whether gzip compression is used on the url page. Gzip compression is a good way to compress and transfer pages. we often open it on the server, so that a KB file may be less than 20 kB after being compressed by gzip, below, gzip

Detailed description of the php mobile phone's local query function. This article will introduce you to a simple and easy-to-use php mobile phone login query function. The code is as follows: Copy the code function this article will introduce you to

PHP removes the bom header from the utf8 file. We sometimes need to remove the header in the utf8 document. we often need to manually clear it. below I have sorted out several methods to clear the bom header in the utf8 format file using the php

Modify the size limit of the image file uploaded by phpckeditor. There is no size limit for the ckeditor editor to upload images or files. here we will introduce two solutions to the size limit of the files uploaded by ckeditor. There is no size

PHP code used to determine whether the string encoding is UTF-8. This article will introduce the program code for PHP to determine whether the string encoding is UTF-8. if you are interested, please refer to it. We used to use mb_detect_encoding ()

Php + jqueryajax email address without refreshing verification instances. We usually use ajax to implement the brushless newest page. in the past, we used the most primitive jsajax to verify the commonly used jqueryajax, which can be solved with a

Phpckeditor solves the problem of garbled characters in the uploaded image file name. File name garbled characters are generally caused by Chinese characters, because ckeditor uses uft8 encoding. if we use gbk or gb2312 on the page, garbled

Php calculates the user-defined function for the remaining time. The rest of the time is the time when an article has been published for several minutes or a few days. This article was published in many blog forums one day ago, next I will introduce

In php, the GBKGB2312 page uses json_decode () Chinese to lose the solution. In php, the json_decode () function can convert arrays and json-format data, but the json_decode () function only supports UTF-8 and ASCII encoding, if it is gkb, there