Teach you one months learn PHP all functions

One of the most important aspects of learning PHP is to use PHP's built-in functions.

When someone asks you how to implement a function, you say a function that he does not know to take care of, others will certainly be respectful to you!

How many built-in functions does PHP have altogether? In fact, plus the commonly used extensions are only more than 1300.

Spend 1-2 hours a day looking at 30 functions, one months can learn PHP all functions!

Want to know what functions PHP has?

Copy Code

1. <?php
2. $f = Get_defined_functions ();
3. Echo ' <pre> ';
4. Print_r ($f [' internal ']);

Similar functions include the following:

Get_declared_classes ();

Get_declared_interfaces ();

Get_defined_constants ();

Get_defined_vars ();

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Come on, try it!