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- How to create a function with default arguments in PHP?
- In PHP, default parameters can be set by assigning values ??to parameters when the function is defined. functionsendNotification($message,$recipient='user@example.com'){echo"Sendingto$recipient:$message";}sendNotification('Hello!'); Output: Sendingtouser@example.com:Hello!sendNotification('Hi!','admin@site.com'); Output: Sendi
- PHP Tutorial . Backend Development 405 2025-09-17 05:35:01
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- What are PHP superglobals?
- PHPsuperglobalsarepredefinedvariablesaccessibleinallscopes,providingessentialdataaboutrequests,sessions,andservers.1.$_GETretrievesURLparameterslike?id=5.2.$_POSTcapturesformdatafromPOSTrequests,suchaslogininputs.3.$_REQUESTcombines$_GET,$_POST,and$_
- PHP Tutorial . Backend Development 801 2025-09-17 05:23:00
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- How to parse XML with SimpleXML in PHP?
- SimpleXML parses XML data, loads using simplexml_load_string or simplexml_load_file; accesses elements through object properties, and obtains attributes using array syntax; supports namespace and conversion into strings or arrays.
- PHP Tutorial . Backend Development 629 2025-09-17 05:13:00
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- How to log errors to a file in PHP?
- ConfigurePHPerrorloggingbysettinglog_errors=Onandspecifyingerror_logpathinphp.ini,thenuseerror_log()functiontomanuallylogerrorsorexceptionstoafile,ensuringthelogfileissecureandnotweb-accessible.
- PHP Tutorial . Backend Development 769 2025-09-17 04:21:01
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- How to send a PUT request with cURL in PHP?
- Initialize cURL with curl_init(), set CURLOPT_CUSTOMREQUEST to "PUT" to specify the request method. 2. Pass data through CURLOPT_POSTFIELDS, such as JSON, you need to use json_encode encoding. 3. Set CURLOPT_HTTPHEADER to include 'Content-Type:application/json' and data length. 4. Enable CURLOPT_RETURNTRANSFER to get the response string, and finally execute curl_exec() and handle the response or error.
- PHP Tutorial . Backend Development 862 2025-09-17 03:35:01
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- How to create and call a function in PHP?
- Defining a function uses the function keyword, followed by the function name and brackets, and using the function name and brackets when calling. For example: functionsayHello(){echo"Hello,world!";}, call sayHello(); function with parameters such as functiongreet($name){echo"Hello,$name!";}, call greet("Alice"); use return return value, such as functionadd($a,$b){return$a $b;}, call $result=add
- PHP Tutorial . Backend Development 572 2025-09-17 03:27:01
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- PHP Name Format Tutorial: Practical Tips for Converting Full Name to 'Name. First Name.'
- This tutorial will explain in detail how to format a full name in PHP to the form of "Name. First Letter.", such as converting "Mike Jones" to "Mike. J." The article will introduce core PHP string processing functions such as exploit, reset, end and mb_substr, and provide a robust solution covering the processing of multi-word names and word names, as well as UTF-8 character set compatibility, helping developers to efficiently implement name abbreviation functions.
- PHP Tutorial . Backend Development 337 2025-09-17 00:36:01
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- How to get data from a SELECT statement in PHP PDO?
- PrepareandexecutetheSELECTstatementusingPDO'sprepare()andexecute()methodsforsecurequerying.2.FetchresultswithfetchAll(PDO::FETCH_ASSOC)toretrieveallrowsasanassociativearrayorusefetch(PDO::FETCH_ASSOC)inaloopforonerowatatime.3.Handlecaseswherenoresult
- PHP Tutorial . Backend Development 503 2025-09-17 00:24:01
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- Handling file renaming issues containing UTF-8 Turkish characters in PHP
- This article aims to solve the problem that PHP encounters when renaming files or folders containing UTF-8 Turkish characters in Windows environment. By converting the UTF-8 encoded path to UTF-16 encoding, the error of "the system cannot find the specified path" can be effectively avoided, and the renaming operation can be successfully completed. This article will provide detailed solutions and sample code to help developers easily deal with such character encoding problems.
- PHP Tutorial . Backend Development 742 2025-09-16 18:00:07
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- PHP requires path problem troubleshooting and optimization: Solve 500 errors and improve project maintainability
- This article discusses in depth the reason why the PHP requires statement is caused by the HTTP 500 error due to file path resolution differences in different operating environments (local and online). The article emphasizes that file system paths should be used instead of URLs for file inclusion, and details how to use __DIR__ magic constants and define project root directory constants to build a robust, secure and easy-to-maintain component introduction mechanism to effectively avoid path errors and improve project stability.
- PHP Tutorial . Backend Development 210 2025-09-16 17:54:01
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- How to efficiently determine whether a specific time is between two dates and times
- This article aims to provide an efficient solution for determining whether a given time point falls within two date and time intervals stored in the database. We will explore how to simplify query statements and avoid unnecessary date formatting to improve code readability and performance using MySQL's built-in functions and BETWEEN operators. At the same time, we will also introduce how to optimize the query, and only return the results of whether there are matching records, further improving efficiency.
- PHP Tutorial . Backend Development 356 2025-09-16 17:51:01
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- MySQL conditional aggregation: Use SUM and CASE statement to implement the conditional sum of fields
- This tutorial details how to implement specific conditions-based field summation in MySQL. By combining the SUM() aggregation function and the CASE statement, records that meet specific conditions can be accurately accumulated numerical values, such as calculating the total duration in a specific state, thereby solving the problem that traditional SUM() cannot aggregate on conditionals, greatly enhancing the flexibility and accuracy of data query.
- PHP Tutorial . Backend Development 195 2025-09-16 17:48:02
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- File renaming problem in PHP handling UTF-8 Turkish characters
- This article discusses the problems encountered when using PHP's rename function to handle file paths containing UTF-8 Turkish characters, and provides a solution to enable Windows systems to correctly identify file paths, thus successfully completing file renaming operations by converting UTF-8 encoding to UTF-16 encoding.
- PHP Tutorial . Backend Development 736 2025-09-16 17:42:01
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- Test HTML structure output using PHPUnit
- This article describes how to use PHPUnit to test HTML structure output, because the assertTag method that comes with PHPUnit is outdated. The article will guide you on how to use the phpunit-dom-assertions extension to verify HTML structures and provide sample code and considerations to help you write reliable HTML structure tests.
- PHP Tutorial . Backend Development 556 2025-09-16 17:30:01
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