Introduction to Alternative syntax in PHP _php tips

Alternative syntax is an uncommon and sometimes important concept in PHP programming. Today, this article shows the use of this concept in an instance form.

Look at the WordPress code, which can be seen in some rare PHP substitution syntax, as follows:

<?php else:?>
    <div class= "entry-content" >
      <?php the_content (__ (' Continue reading class= "Meta-nav" >→</span> ', ' Thebox ');?> <?php wp_link_pages ("Before ' =>" <div
      class= "Page-links" >. __ (' Pages: ', ' Thebox '), ' after ' => ' </div> ');?>
    </div><!--. Entry-content-->
PHP endif;?>

Many readers will have the question: what is the colon and endif after else? Google a bit to understand that this is the alternative syntax of PHP.

where the colon (:) equivalent to the left curly brace ({), endif equivalent Yu Yu curly braces (});

Let me give you one more example:

<?php if ($a <0):?>
//negative situation
<?php endif;?>

The preceding statement is equivalent to:

<?php if ($a <0) {?>
//Negative number
<?php}?>

So the syntax in PHP has an alternative syntax?

Process Control (including If,while,forforeach,switch) These statements have alternative syntax.

The basic form of alternative syntax:

The left curly brace ({) is replaced with a colon (:), and the right curly brace (}) is replaced with Endif;,endwhile;,endfor;,endforeach; and Endswitch;

While substitution syntax:

<?php while (expr):?>
 <li> loop content </li>
<?php endwhile;?>

Other alternative grammars can be analogous.

I hope this article will help you learn about PHP programming.