Found a total of 10000 related content
PHPExcel notes, mpdf export, phpexcelmpdf_PHP tutorial
Article Introduction：PHPExcel notes, mpdf export, phpexcelmpdf. PHPExcel notes, mpdf export, phpexcelmpdf phpexcel common processing ##Import class library require 'PHPExcel/Classes/PHPExcel.php'; require 'PHPExcel/Classes/PHPExcel/Writer/Excel5.php'; //Non-07 format
2016-07-12
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1159
How to read and write files in Java I/O?
Article Introduction：The most common way to read and write files in Java is to use the java.io package. The specific methods include: 1. Use FileReader and FileWriter to perform character-level reading and writing of text files, which is suitable for processing human-readable text content; 2. Use BufferedReader and BufferedWriter to provide a buffering mechanism to improve the efficiency of reading and writing text by line, which is suitable for log analysis and configuration file parsing; 3. Use FileInputStream and FileOutputStream to process binary files, which is suitable for copying pictures, network transmission and other scenarios. These classes provide flexible choices based on the data type and operation method. It is recommended to combine try-wit with
2025-07-10
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946
php regex for password strength
Article Introduction：To determine the strength of the password, it is necessary to combine regular and logical processing. The basic requirements include: 1. The length is no less than 8 digits; 2. At least containing lowercase letters, uppercase letters, and numbers; 3. Special character restrictions can be added; in terms of advanced aspects, continuous duplication of characters and incremental/decreasing sequences need to be avoided, which requires PHP function detection; at the same time, blacklists should be introduced to filter common weak passwords such as password and 123456; finally it is recommended to combine the zxcvbn library to improve the evaluation accuracy.
2025-07-03
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479
How to parse strings in PHP?
Article Introduction：Parsing strings is a very common and important operation in PHP, and you will use it whether you are processing user input, reading file content, or interacting with a database. Today we will explore in-depth various methods and techniques for parsing strings in PHP. In PHP, there are many ways to parse strings, from simple string functions to regular expressions to more complex parsing libraries, each with its own unique application scenarios and advantages and disadvantages. Let’s start from the most basic and gradually deepen into more complex analytical techniques. First, let's take a look at the most commonly used string functions in PHP. These functions are simple and easy to use and are suitable for handling basic string operations. For example, the exploit() function can split the string into numbers according to the specified separator.
2025-05-20
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468
how to cast an object to a php array
Article Introduction：The easiest way to convert an object to a PHP array is to use type conversion (array)$object. For stdClass objects, properties will be converted directly into array key-value pairs; but private or protected property names will be modified, such as \0MyClass\0name. For custom classes, you can manually map properties or use reflection to get common properties. Recursive conversion is required when processing nested objects to ensure that objects at all levels are converted. You can also consider built-in methods such as json_decode(json_encode($object), true) or framework tools such as Laravel's Arr::fromArrayable(). The choice depends on structural complexity and nature
2025-07-04
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344
C move semantics explained
Article Introduction：Move semantics is a feature introduced by C 11 to optimize resource management and reduce unnecessary copy operations. Its core idea is to directly transfer the object's resources rather than copying when it is about to be destroyed, and it is implemented through moving constructors and moving assignment operators. For example, std::move converts lvalues ??to rvalue references to trigger a move operation instead of actually performing a move. Unlike copy, moving usually puts the original object in an empty or invalid but legal state, such as a null pointer or an empty vector. Common applicable scenarios include processing large objects, returning local objects to containers, adding elements and resource management classes, but excessive use should be avoided in small objects or high-frequency call paths. Correctly writing mobile constructors and assignment operators and understanding resource transfer timing is to master this feature
2025-07-04
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802
how to get the key of the last element in a php array
Article Introduction：There are three common ways to get the key of the last element of the array in PHP. First, use the end() and key() functions to cooperate: first call end($array) to move the pointer to the end, and then use key($array) to obtain the key; second, use array_keys() to combine count(): obtain the key array through $keys=array_keys($array), and then take $keys[count($keys)-1]; third, use array_pop() but be careful that it will remove the last element, which may cause data loss. In addition, you should always check whether the array is empty before the operation, and avoid generating additional copies when processing large arrays to save memory.
2025-07-04
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187
How can you create and consume SOAP or XML-RPC web services with PHP?
Article Introduction：How to create and consume SOAP or XML-RPC network services using PHP? 1. For SOAP services, use the SoapServer class to define processing logic on the server side and generate WSDL files, bind classes or functions to respond to requests; use the SoapClient class to call remote methods on the client side and ensure that the php_soap extension is enabled. 2. For XML-RPC services, you need to use XML_RPC3 and other libraries to register methods on the server side and process requests, and send XML-RPC messages to the client for calls. 3. Common precautions include: enabling necessary extensions, disabling WSDL cache for development, correctly handling errors and exceptions, using debugging tools to view request content, ensuring security and checking
2025-06-07
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918
Dave The Diver: How To Catch Spider Crabs
Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w
2025-01-10
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777
Prepare for Interview Like a Pro with Interview Questions CLI
Article Introduction：Prepare for Interview Like a Pro with Interview Questions CLI
What is the Interview Questions CLI?
The Interview Questions CLI is a command-line tool designed for JavaScript learners and developers who want to enhance their interview
2025-01-10
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1407
Soft Deletes in Databases: To Use or Not to Use?
Article Introduction：Soft Deletes: A Question of DesignThe topic of soft deletes, a mechanism that "flags" records as deleted instead of physically removing them, has...
2025-01-10
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