While loop problem

[seandisanti]

it's a bug, probably a rounding error. kind of cool, but avoidable. First, the loops should be written as

Code: Select all

while ($i < x){}

where x is the 1 or 2.

It is actually generating output but going into an infinite loop because it doesn't exit correctly when $i is greater than 1.4 with your example. For demonstration purposes, i've modified your code slightly. code blocks are now closed and i added a second exit condition for the second while loop so that it will exit every time, but you can still see that the break is not executed when it should be.

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<?php
	$i=0;
	$j=5;
	while($j==5)
	{
		echo $i;
		echo ",";
		$i=$i+.2;
		if($i==1)
		{
			break;
		}
	}
?>

<?php
	$i=0;
	$j=5;
	while($j==5 && $i <3)
	{
		echo $i;
		echo ",";
		$i=$i+0.2;
		if($i==2) //even though $i hits 2 it doesn't exit
		{
			break;
		}
	}
?>

[johnj]

if you want to numerically compare then it is better to use the bcmath library. in this case it should be:

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if(bccomp($i,2) == false)