Consider the below code
$t = preg_replace('/0+$/','',".800000000000000"); //Replace last 0s
This gives me output as .8 as expected
Now consider the below code
$a = .80;
$t = sprintf('%.15f', $a)."<br>";
echo "First : $t<br>";
$t = preg_replace('/0+$/','',$t);
echo "Second : $t <br>";
This gives output as First : 0.800000000000000 Second : 0.800000000000000
Could you help me to find out why the last 0s are not replaced by regular expression in this case as the expected output is 0.8 ?
your variable $t contains 0.800000000000000<br> so there ar no trailing zeros to cut off.
you'll have to shorten the string before appending <br>.
You append a <br> tag at the end, while the Regex says 0's before end of line
'/0+$/'
^ <- end of line, nothing should come after 0's
".800000000000000"
$a = .80;
$t = sprintf('%.15f', $a)."<br>";
// $t = .800000000000000<br>
Since you are adding <br> to the end of $t with this line:
$t = sprintf('%.15f', $a)."<br>";
You regex no longer matches trailing 0. "<br>" is part of the presentation, you should add it at the very end.