PHP example tutorial PHP automatic loading class usage example analysis

The example in this article describes the usage of PHP automatic loading class. Share it with everyone for your reference, the details are as follows:

<p>Understanding the idea is the most important thing: </p><p>Automatic loading of objects</p><p>Many developers create a PHP source file for the definition of each class when writing object-oriented applications . A big annoyance is having to write a long list of include files (one file per class) at the beginning of each script. </p><p>In PHP 5, this is no longer necessary. It is possible to define an __autoload() function that is automatically called when an attempt is made to use a class that has not yet been defined. By calling this function, the scripting engine has a last chance to load the required classes before PHP fails with an error. </p><p>Tip</p><p>spl_autoload_register() provides a more flexible way to implement automatic loading of classes. Therefore, use of the __autoload() function is no longer recommended and may be deprecated in a future version. </p><p>Readers who are interested in more PHP-related content can check out the special topics of this site: "Introduction Tutorial on PHP Object-Oriented Programming", "Summary of PHP Mathematical Operation Skills", "Summary of PHP Office Document Skills (including word, excel, access) , ppt)", "Complete PHP Array (Array) Operation Skills", "PHP Data Structure and Algorithm Tutorial", "php Programming Algorithm Summary", "php Regular Expression Usage Summary", and "php Common Database Operation Skills Summary" 》</p><p>I hope this article will be helpful to everyone in PHP programming. </p>
                
                
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