PHP

PHP read the file , Fread is used to read the contents of the file opened with fopen, let's take a look at the fread and gets instance tutorial.I apologize simply by taking the point of actually getting to your profile file. In this lesson we will

PHP expressions An expression is the most important component of PHP. In PHP 3.0, almost everything you write is an expression. 　　 The simplest but precise definition of an expression is "anything with a value". A simple example is constants and

The PHP program has been written for a long time, and naturally knows the functions he provides, and he offers a lot of features that really feel good, but sometimes it turns out that PHP lacks some functionality and always produces ideas for adding

The strtotime () function parses the date and time descriptions of any English text into Unix timestamps.Simple: The code is as follows:Copy code Echo strtotime ('-1 MON', strtotime ("2010-01-01"); // returns the Monday of the date.Echo

I am reading some documents and always see the following code when reading books: The code is as follows:Copy code $ Query = sprintf ('Insert INTO % sUSER (USERNAME, PASSWORD ,'.'Email _ ADDR, IS_ACTIVE, PERMISSION) VALUES ("% s", % d, % d )',DB_

Let's take an example today: The code is as follows:Copy code ';Function she ($ a, $ B, $ c){Return array ($ c, $ B, $ );}List ($ x, $ y, $ z) = she (2, 3, 4 );Echo '$ x ='. $ x. '$ y ='. $ y. '$ z ='. $ z;?>The execution result is as

The code is as follows:Copy code Function sendHeader ($ num, $ rtarr = null){     Static $ sapi = null;If ($ sapi = null){         $ Sapi = php_sapi_name ();}     Return $ sapi ++; When reading the PW source code, I found that the setHeader ()

Instance The code is as follows:Copy code $ Str = "webpage creation tutorial www.111cn.net ";$ Str = mb_ereg_replace ('^ (|) +', '', $ str );$ Str = mb_ereg_replace ('(|) + $', '', $ str );Echo mb_ereg_replace (''," n ", $ str );?> Some friends

The PHP file_put_contents () function is the most suitable option for writing strings or appending string content to a file at a time.File_put_contents ()The file_put_contents () function is used to write a string to a file. The number of bytes

When PHP processes the page, we use iconv or mb_convert functions for character set Conversion. However, this is actually a prerequisite. That is, we must know in and out encoding in advance before we can perform the correct conversion.The following

The code is as follows:Copy code Function get_area ($ mob ){$ Mob = substr ($ mob, 0, 7 );If ($ Handle = @ fopen ('mob. dat ', 'RB ')){ @ Flock ($ handle, LOCK_SH );$ String = @ fread ($ handle, @ filesize ('mob. dat '));@ Fclose ($ handle );} $

Recently, in a content management project, the customer has to come up with a multi-level classification. In fact, in many open-source backgrounds, there are infinite classification levels, such as the 111cn.net background, however, the data of

Look at a simple recursive instanceExample 1 The code is as follows:Copy code Function demo ($ ){Static $ sum = 1;If ($ a> 1 ){$ Sum * = $;Demo (-- $ );} Else {$ A = $ sum;        } Return $ sum;}   Echo demo (10 ); Example 2Traverse

In php development, you often encounter reading some files. The easiest way is to use functions such as file and file_get_contents. A few simple lines of code can be easily done. However, when the file to be operated is a relatively large file,

This section describes how to use Crontab in Linux. For more information about how to use crontab, see: Linux scheduled task crontab.1. Use PHP to execute scripts in CrontabJust like calling a common shell script in Crontab (specific Crontab usage),

There are three PHP conditional control statements:First: if statement;Type 2: switch statement;Third: ternary operators;The three condition control statements are described respectively.First: if statement.The if syntax has the following formats:1 )

Php qr code generationThere are many ways to generate a QR Code by using APIs opened by google and the php QR Code library. This article focuses on using the php QR Code library to generate a QR Code.1. Code package download address:

The following describes how to determine the image format in php:The first method is to treat the image path as a string, so the image format is changed to a string for searching for a. Number. The code is as follows:Copy code $ File = "test.jpg

Start time and end time of each time period. For example, in the seven-day separation, find the start time and end time of the current time period. Pay attention to the time zone!Note: do not simply modulo the timestamp. Instead, perform the modulo