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Introduction to alternative syntax in PHP, introduction to PHP alternative syntax_PHP tutorial

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2016-07-13 10:09:561250browse

Introduction to alternative syntax in PHP, introduction to PHP alternative syntax

I took a look at the wordpress code today, and there are some rare php alternative syntaxes in it,

Copy code The code is as follows:


         

                                                                                                                                                   'What do the colon and endif after else mean? I'm a newbie, I haven't seen it before, so I googled it and realized that this is an alternative syntax for PHP,

Colon (:) is equivalent to the left curly bracket ({), endif is equivalent to the right curly bracket (});

Give me an example:


Copy code The code is as follows:


It’s a negative number


Copy code The code is as follows:


The above statement is equivalent to


Copy code The code is as follows:


It’s a negative number


Copy code The code is as follows:


What are the alternative syntaxes in PHP?

Flow control (including if, while, forforeach, switch) statements have alternative syntax.

Basic form of alternative syntax:

Replace the left curly brace ({) with a colon (:), and replace the right curly brace (}) with endif;, endwhile;, endfor;, endforeach; and endswitch;

while alternative syntax:


Copy code The code is as follows:
  • What to loop




  • Other alternative syntaxes can be derived by analogy.

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