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PHP common character processing operation classes

String processing class

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PHP common character processing operation classes Introducing a common PHP character processing operation class, a static common class, which handles built-in parameters of random numbers, encrypts and decrypts strings, matches mobile phone numbers with regular patterns, verifies ID cards, and processes string information.

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(Advanced) PHP common image processing classes

07 Feb 2017

/*Known issues: 1. In the image scaling function, use the imagecreatetruecolor function to create a canvas and use the transparency processing algorithm, but images in PNG format cannot be transparent. Creating a canvas using the imagecreate function can solve this problem, but the number of colors in the scaled image is too small.

Common image processing classes in php, _PHP tutorial

12 Jul 2016

Commonly used image processing classes in php. Commonly used image processing classes in php, ?php /*Known issues: 1. In the image scaling function, use the imagecreatetruecolor function to create a canvas and use a transparency processing algorithm, but images in PNG format cannot

Use Java's String.isEmpty() function to determine whether a string is empty

24 Jul 2023

Use Java's String.isEmpty() function to determine whether a string is empty. In programming, you often encounter the situation of determining whether a string is empty. Java provides the isEmpty() function of the String class, which can easily determine whether a string is empty. The String class is a commonly used string processing class in Java and provides a large number of methods for processing character sequences. Among them, isEmpty() is a method in the String class, used to determine whether the string is empty.

PHP image processing class, thumbnail, watermark_PHP tutorial

20 Jul 2016

PHP image processing class, thumbnail, watermark. php image processing class, thumbnail, watermark class Image { /** * @var string $fileName file name * @access private */ private $fileName = ''; /** * @var gd resource $imageResource original image

String processing techniques in C++

22 Aug 2023

In C++, string is a very common data type. Moreover, string processing is also a very important link in programming. This article will introduce some commonly used string processing techniques in C++, hoping to be helpful to readers. 1. String class in C++ In C++, string is a class contained in the header file <string>. There are many member functions in the string class. Here are some commonly used member functions: 1. append() function

Interpretation of Java documentation: Detailed introduction to the substring() method of the StringBuilder class

03 Nov 2023

Interpretation of Java documentation: Detailed introduction to the substring() method of the StringBuilder class Introduction: In Java programming, string processing is one of the most common operations. Java provides a series of classes and methods for string processing, among which the StringBuilder class is a commonly used choice for frequent string operations. In the StringBuilder class, the substring() method is a very useful method for intercepting substrings of strings. This article will

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