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Alternative syntax for control structures
(PHP 4, PHP 5, PHP 7)
PHP offers an alternative syntax for some of its control structures; namely, if, while, for, foreach, and switch. In each case, the basic form of the alternate syntax is to change the opening brace to a colon (:) and the closing brace to endif;, endwhile;, endfor;, endforeach;, or endswitch;, respectively.
<?php if ($a == 5): ?>
A is equal to 5
<?php endif; ?>
In the above example, the HTML block "A is equal to 5" is nested within an if statement written in the alternative syntax. The HTML block would be displayed only if $a is equal to 5.
The alternative syntax applies to else and elseif as well. The following is an if structure with elseif and else in the alternative format:
<?php
if ($a == 5):
echo "a equals 5";
echo "...";
elseif ($a == 6):
echo "a equals 6";
echo "!!!";
else:
echo "a is neither 5 nor 6";
endif;
?>
Note:
Mixing syntaxes in the same control block is not supported.
Any output (including whitespace) between a switch statement and the first case will result in a syntax error. For example, this is invalid:
<?php switch ($foo): ?>
<?php case 1: ?>
...
<?php endswitch ?>
Whereas this is valid, as the trailing newline after the switch statement is considered part of the closing ?> and hence nothing is output between the switch and case:
<?php switch ($foo): ?>
<?php case 1: ?>
...
<?php endswitch ?>
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Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-control-structures.alternative-syntax.html
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References
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