国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂

Home Backend Development PHP Tutorial php file function_PHP tutorial

php file function_PHP tutorial

Jul 20, 2016 am 11:01 AM
file php function string array read

php file function ?

file
(PHP 4, PHP 5)

file - Read the entire file into an array

Description
a list of files (string $file[abstract$flag=0[, resource$background]])
Read the entire file into an array.

Note: You can use file_get_contents() to return file contents as a string.


Parameters

file name
file path.

Tips
URLs can be used as filenames with this feature if open packaging is enabled. See the fopen() function for more details on how to specify a file name and a list of supported protocols/encapsulation protocols for a list of supported URL protocols.

Flag
The optional argument can be a flag, or above, the following constant:

FILE_USE_INCLUDE_PATH
Search include_path in this file.
FILE_IGNORE_NEW_LINES
Don't add a new line at the end of each array element
FILE_SKIP_EMPTY_LINES
Skip empty lines
FILE_TEXT
The returned content is in UTF-8 encoding. You can specify a different encoding to create a custom range. This flag cannot be used with FILE_BINARY. This flag only works since PHP 6.
FILE_BINARY
The content is changed to binary data. This is the default setting and cannot be used with FILE_TEXT. This flag only works since PHP 6.

Background
The stream_context_create() function for background resource creation.


Note: In this case, PHP 5.0.0 is supported. To illustrate, see stream functions.



Return value
Returns the array in file. Each element of the array corresponds to a line in the file, still with newlines attached. On failure, file() returns FALSE.

Note: Each line in the resulting array will include the end of the line, unless FILE_IGNORE_NEW_LINES is used, so you still need to use rtrim() if you don't want to end the line.


NOTE: If PHP does not correctly recognize line endings when either reading a file or creating a Macintosh, enabling the auto_detect_line_endings runtime configuration option may help resolve this issue.

Modify

Release Notes
6.0.0 adds support for the FILE_TEXT and FILE_BINARY flags.
5.0.0 background parameters increased
5.0.0 to pre-PHP 5.0.0 flag parameters are only overridden in include_path and enabled with 1
4.3.0file() becomes binary safe


Example

For example, the example of file No. 1 ( )

// Get a file into an array. In this example we'll go through HTTP to get
// the HTML source of a URL.
$lines = file('http://www.example.com/');

// Loop through our array, show HTML source as HTML source; and line numbers too.
foreach ($lines as $line_num => $line) {
echo "Line #{$line_num} : " . htmlspecialchars($line) . "
n";
}

// Another example, let's get a web page into a string. See also file_get_contents().
$html = implode('', file('http://www.example.com/'));

// Using the optional flags parameter since PHP 5
$trimmed = file('somefile.txt', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
?>


www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/445474.htmlTechArticlephp file function file (PHP 4, PHP 5) file-read the entire file into an array description series file(string $file[abstract$flag=0[, resource$background]]) Read the entire fi...
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undress AI Tool

Undress AI Tool

Undress images for free

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

PHP Tutorial
1502
276
How to use PHP to build social sharing functions PHP sharing interface integration practice How to use PHP to build social sharing functions PHP sharing interface integration practice Jul 25, 2025 pm 08:51 PM

The core method of building social sharing functions in PHP is to dynamically generate sharing links that meet the requirements of each platform. 1. First get the current page or specified URL and article information; 2. Use urlencode to encode the parameters; 3. Splice and generate sharing links according to the protocols of each platform; 4. Display links on the front end for users to click and share; 5. Dynamically generate OG tags on the page to optimize sharing content display; 6. Be sure to escape user input to prevent XSS attacks. This method does not require complex authentication, has low maintenance costs, and is suitable for most content sharing needs.

How to use PHP combined with AI to achieve text error correction PHP syntax detection and optimization How to use PHP combined with AI to achieve text error correction PHP syntax detection and optimization Jul 25, 2025 pm 08:57 PM

To realize text error correction and syntax optimization with AI, you need to follow the following steps: 1. Select a suitable AI model or API, such as Baidu, Tencent API or open source NLP library; 2. Call the API through PHP's curl or Guzzle and process the return results; 3. Display error correction information in the application and allow users to choose whether to adopt it; 4. Use php-l and PHP_CodeSniffer for syntax detection and code optimization; 5. Continuously collect feedback and update the model or rules to improve the effect. When choosing AIAPI, focus on evaluating accuracy, response speed, price and support for PHP. Code optimization should follow PSR specifications, use cache reasonably, avoid circular queries, review code regularly, and use X

Beyond the LAMP Stack: PHP's Role in Modern Enterprise Architecture Beyond the LAMP Stack: PHP's Role in Modern Enterprise Architecture Jul 27, 2025 am 04:31 AM

PHPisstillrelevantinmodernenterpriseenvironments.1.ModernPHP(7.xand8.x)offersperformancegains,stricttyping,JITcompilation,andmodernsyntax,makingitsuitableforlarge-scaleapplications.2.PHPintegrateseffectivelyinhybridarchitectures,servingasanAPIgateway

Object-Relational Mapping (ORM) Performance Tuning in PHP Object-Relational Mapping (ORM) Performance Tuning in PHP Jul 29, 2025 am 05:00 AM

Avoid N 1 query problems, reduce the number of database queries by loading associated data in advance; 2. Select only the required fields to avoid loading complete entities to save memory and bandwidth; 3. Use cache strategies reasonably, such as Doctrine's secondary cache or Redis cache high-frequency query results; 4. Optimize the entity life cycle and call clear() regularly to free up memory to prevent memory overflow; 5. Ensure that the database index exists and analyze the generated SQL statements to avoid inefficient queries; 6. Disable automatic change tracking in scenarios where changes are not required, and use arrays or lightweight modes to improve performance. Correct use of ORM requires combining SQL monitoring, caching, batch processing and appropriate optimization to ensure application performance while maintaining development efficiency.

Building Resilient Microservices with PHP and RabbitMQ Building Resilient Microservices with PHP and RabbitMQ Jul 27, 2025 am 04:32 AM

To build a flexible PHP microservice, you need to use RabbitMQ to achieve asynchronous communication, 1. Decouple the service through message queues to avoid cascade failures; 2. Configure persistent queues, persistent messages, release confirmation and manual ACK to ensure reliability; 3. Use exponential backoff retry, TTL and dead letter queue security processing failures; 4. Use tools such as supervisord to protect consumer processes and enable heartbeat mechanisms to ensure service health; and ultimately realize the ability of the system to continuously operate in failures.

python run shell command example python run shell command example Jul 26, 2025 am 07:50 AM

Use subprocess.run() to safely execute shell commands and capture output. It is recommended to pass parameters in lists to avoid injection risks; 2. When shell characteristics are required, you can set shell=True, but beware of command injection; 3. Use subprocess.Popen to realize real-time output processing; 4. Set check=True to throw exceptions when the command fails; 5. You can directly call chains to obtain output in a simple scenario; you should give priority to subprocess.run() in daily life to avoid using os.system() or deprecated modules. The above methods override the core usage of executing shell commands in Python.

Creating Production-Ready Docker Environments for PHP Creating Production-Ready Docker Environments for PHP Jul 27, 2025 am 04:32 AM

Using the correct PHP basic image and configuring a secure, performance-optimized Docker environment is the key to achieving production ready. 1. Select php:8.3-fpm-alpine as the basic image to reduce the attack surface and improve performance; 2. Disable dangerous functions through custom php.ini, turn off error display, and enable Opcache and JIT to enhance security and performance; 3. Use Nginx as the reverse proxy to restrict access to sensitive files and correctly forward PHP requests to PHP-FPM; 4. Use multi-stage optimization images to remove development dependencies, and set up non-root users to run containers; 5. Optional Supervisord to manage multiple processes such as cron; 6. Verify that no sensitive information leakage before deployment

VSCode settings.json location VSCode settings.json location Aug 01, 2025 am 06:12 AM

The settings.json file is located in the user-level or workspace-level path and is used to customize VSCode settings. 1. User-level path: Windows is C:\Users\\AppData\Roaming\Code\User\settings.json, macOS is /Users//Library/ApplicationSupport/Code/User/settings.json, Linux is /home//.config/Code/User/settings.json; 2. Workspace-level path: .vscode/settings in the project root directory

See all articles