The do-while loop is very similar to the while loop, the only difference is that the do-while loop checks the expression (condition) at the end of each iteration. In a do-while loop, the loop is executed at least once when the given expression is “false”. The first iteration of the loop is executed without checking the condition.
Flowchart of the do-while loop:
Syntax:
do {
// Code is executed
} while (if the condition is true);
Example 1: The following code demonstrates the do..while statement.
PHP
<?php // Declare a number $num = 10; // do-while Loop do { echo $num . "\n"; $num += 2; } while ($num < 20); ?> |
Output
10 12 14 16 18
Example 2:
PHP
<?php // Declare a number $num = 0; // do-while Loop do { $num += 5; echo $num . "\n"; } while ($num < 20); ?> |
Output
5 10 15 20
Reference: https://www.php.net/manual/en/control-structures.do.while.php
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