Summary of commonly used const...

This article mainly introduces the system constants and variables commonly used in thinkphp. Friends...

Detailed examples of the diffe...

How to use php static variables and custom constants ⚑ Declaration and use of static variables ⚑ How...

Detailed explanation of __FILE...

The dirname(FILE_) function returns the path where the script is located. For example, the file b.p...

Detailed example code of how P...

If you understand the above sentence, then the rest is nonsense. The PHP manual is quite comprehensi...

How to define constants, syste...

Constants in PHP are divided into custom constants and system constants. Custom constants need to be...

Detailed explanation of php cu...

1. If two identical constants are defined, which of the former and the latter will work? The former ...

Analysis of the difference bet...

1. The value of a custom constant constant can only be scalar data (boolean, integer, float and stri...

Simple example explanation of ...

Class constants: In a class, data that remains unchanged during the running cycle is saved. Definit...

Detailed examples of how to us...

This article introduces the implementation of simple polymorphic applications in PHP based on interf...

Detailed examples of two metho...

The concept of polymorphism in Java refers to the type of object that a variable can point to, which...