How to install php libdatrie

In our daily development work, we often use PHP's string manipulation functions. However, when processing massive strings, traditional string matching algorithms are inefficient and cannot meet high-performance requirements. Therefore, we need to use some efficient string matching algorithms to optimize the program.

libdatrie is a fast and efficient string matching algorithm library, which is widely used in various programming languages ​​and natural language processing (NLP). This article will introduce how to use libdatrie in PHP.

1. Install libdatrie

Before using libdatrie, you first need to install this library on our server. The following are the installation steps:

1. Installation under Ubuntu system

Ubuntu system can be installed through APT:

sudo apt-get update
sudo apt-get install libdatrie-dev

2. Installation under CentOS system

CentOS system can be installed through YUM:

sudo yum install libdatrie-devel

3. Source code installation

Download the latest source code from the official website of libdatrie, And decompress:

tar xvzf datrie-x.x.x.tar.gz

Enter the decompressed directory and execute the following commands to compile and install:

./configure
make
sudo make install

2. Install the PHP extension

After installing libdatrie , we also need to install the corresponding extension libdatrie in PHP. The following are the installation steps:

1. Download libdatrie PHP extension

The latest version of the libdatrie extension can be found in PECL (PHP Extension Community Library) and can be downloaded through the following command:

sudo pecl install datrie

2. Compile and install libdatrie PHP extension

The downloaded extension needs to be compiled and installed before it can be used. First, you need to enter the extension directory:

cd /usr/local/lib/php/extensions/no-debug-non-zts-201XXXXX/datrie

Then, execute the following commands to compile and install:

sudo phpize
sudo ./configure
sudo make && make install

3. Configure the php.ini file

In After installing the PHP extension, you need to add it to the PHP configuration file php.ini. Add the following content at the end of the file:

extension=datrie.so

3. Use libdatrie

1. to create a Trie tree

The Trie tree is the core implementation of libdatrie. The construction needs to be completed through the following interface:

$datrie = trie_new();

2. Add keywords

Then, we can add keywords to the Trie tree:

$count = trie_add($datrie, "keyword1");
$count = trie_add($datrie, "keyword2");
...

where , $count indicates the number of successfully added keywords.

3. Search for keywords

Search for keywords in the Trie tree using the following function:

$ret = trie_check($datrie, "search_keyword");

Among them, $ret represents the position where the keyword appears. If no keyword is matched, false is returned.

4. Delete keywords

To delete keywords in the Trie tree, use the following function:

$ret = trie_delete($datrie, "deleted_keyword");

Among them, $ret represents the position where the keyword appears. If no keyword is matched, false is returned.

4. Summary

This article introduces the installation and use of libdatrie. Through libdatrie, we can use efficient string matching algorithms in PHP to optimize program performance. Hope this article is helpful to you.

The above is the detailed content of How to install php libdatrie. For more information, please follow other related articles on the PHP Chinese website!