PHP resets the array to a continuous numeric index.
For example, a php array:
$arr = array( 1 => 'apple', 3 => 'banana', 5 => 'orange' );
To convert to an array like this:
$arr = array( 0 => 'apple', 1 => 'banana', 2 => 'orange' );
1.
This article provides a detailed analysis of some common headers. For more information, see
Common header commandsThe header is divided into three parts:The first part is the HTTP Version );
The second part is the Status code );
The third part is
This article provides a detailed analysis of common php self-built functions in some php projects, for more information, see the following php functions, which are the most commonly used project development functions in it power. these functions are
PHPPear installation and use
Install pear
--------------
Pear is a PHP extension and application library. it contains many useful classes. after php5.0 is installed, pear is not actually installed. the installation method is as follows:
1.
Download adodb and put the adodb folder under the pear directory. The premise is to be here: http://sourceforge.net/project/showfiles.php? Group_id = 42718 & package_id = 220409 & release_id = 649609
The code is as follows:
Include
This article provides a detailed analysis of how to create a basic authentication site for php. if you need a friend's reference, by default, most web servers are configured for anonymous access, that is, when you access the information on the
This article provides a detailed analysis of the for, while, and foreach traversal time comparison. for more information, see this article in others' spaces, however, I have never compared the three of them. today I have also learned about it.
The
Full parsing of dangerous functions in PHP. Read the full parsing of dangerous functions in PHP. if you do not need to compile PHP, you must disable PHP parsing support in CLI mode. During PHP compilation, PHP parsing support in CLI mode must not be
This article provides a detailed analysis of the use of class constants in php. For more information, see
Note:Unlike other object-oriented programming languages, in php, classes cannot use final modifiers for an attribute variable.
If you want to
Basic PHP syntax, learning basic tutorials for php friends. PHP script block
End. You can place PHP script blocks anywhere in the document.
Of course, you can use
To start and end the script block.
However, we recommend that you use the standard
Summary of precautions for using variables on the webpage. Variable definition
⚑Variable type
⚑Use of variables
Variables are objects that can be constantly changed in the memory. we can think of the memory as a sub-district. There are many tenants
This article provides a detailed analysis of the use of iconv functions in php. For more information about how to install PHP modules in unix, recompile PHP and install templates in Windows, you only need. you can open the corresponding dll for the
Instead of interpreting the array in PHP as an array in our narrow sense, I think we may also split this array into two parts. one is our regular array, and the other is our Dictionary.
1. arrays in PHP
Instead of interpreting the array in PHP as
This article provides a detailed analysis of the curl class that can be used to simulate get, post, and curl downloads. For more information, see
As follows:
The code is as follows:
Class Curl {/** Get access to the specified address* @ Param
This article provides a detailed analysis of apachehost configuration. For more information, see
ServerAdmin webmaster@dummy-host.127.0.0.1
DocumentRoot "D:/dev/Apache2.2/docs/dummy-host.127.0.0.1"
ServerName dummy-host.127.0.0.1
To determine whether the database field is null, php does not have a direct function, but we can use the return value of the mysql_fetch_array () function to determine.
For example.
Method 1:
The code is as follows:
$ SQL = "select * form
The in_array function is used to check whether an array of values exists. it is used to determine whether a specified value exists in the current array. In_array
(PHP 4, PHP 5)
In_array-check whether a value exists in the array
Description
The
This article provides a detailed analysis of the use of the PHP output cache (output_buffering). For more information, see
First, clarify the PHP output sequence1. open the php output cache: echo, print-> php output_buffring-> server buffering->
In php, the method for reading single-choice radio values is the same as that for retaining single-choice button values in php.
Php read single-choice button radio value
The code is as follows:
Php read single-choice button radio value
This article provides a detailed analysis of the installation and use of APC in PHP. For more information, see
1. install PHPAPCDownload and unzip the installation package:
The code is as follows:
Http://pecl.php.net/get/APC-3.1.13.tgz
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