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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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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

Efficient extraction of ontology class names and processing generator in Owlready2

28 Dec 2025

This tutorial details how to convert ontology class generators into lists in Owlready2 and further extract concise class names from full IRIs. Through sample code, it demonstrates the use of the _name attribute and string processing methods to achieve accurate acquisition and management of ontology information and improve the convenience of data processing.

PHP image processing class library and demonstration sharing, php image processing class library_PHP tutorial

12 Jul 2016

PHP image processing class library and demonstration sharing, PHP image processing class library. PHP image processing class library and demonstration sharing, PHP image processing class library I simply wrote a PHP image processing class library. Although it has relatively few functions, it is not too advanced at present and will be used in the future.

PHP string processing full-width and half-width conversion, PHP string full-width and half-width_PHP tutorial

12 Jul 2016

PHP string processing full-width and half-width conversion, PHP string full-width and half-width. PHP string processing full-width and half-width conversion, PHP string full-width and half-width processing, half-width and full-width processing are common problems in string processing. This article tries to provide you with an idea. 1. Concept

The principle and implementation of using the indexOf method to find the first unique character in a string

27 Feb 2026

This article explores in depth how to use the indexOf method of the Java String class, combined with its overloaded form, to efficiently find the first non-repeating character in a string. By analyzing in detail the working principle of the conditional expression s.indexOf(s.charAt(i), s.indexOf(s.charAt(i)) 1) == -1, and providing complete code examples and precautions, it helps readers understand and master this string processing technique.

Deep understanding of JSONSerializer: How to avoid the 'class' key being excluded by default

22 Nov 2025

This article explores an issue where the 'class' key is ignored by default when converting a JSON string containing the 'class' key to a JSON object using the JSONSerializer.toJSON method. By introducing the JsonConfig configuration object and setting setIgnoreDefaultExcludes(true), this problem can be effectively solved to ensure that all key-value pairs are correctly serialized and deserialized, thereby achieving fine control over JSON processing.