[RESOLVED] Ereg

[thekidscareya]

How do I use ereg() to format a time string?

Eg

$time = "00:00:00";
if(ereg("", $time)
{
echo "The $time variable is correctly formatted";

Basically, how do I use ereg() to make sure the $time variable is formatted to HH:MM:SS format?

Thanks.

[drew010]

its possible to use regular expressions to do this but if you want to make sure the time is a real time and not just fitting the format, its somewhat easier to use a function like that below.

this will check to make sure the time is one that is allowed on a clock, and you can pass a 1 to the second optional parameter to validate a 24 hour time.

<?php

function is_time($time, $_24hour = FALSE)
{
	if ($_24hour) {
		$min = 0; $max = 23;
	} else {
		$min = 1; $max = 12;
	}

$parts = explode(':', $time);

$valid = TRUE;
if (sizeof($parts) != 3) {
  $valid = FALSE;
} else {
  if ($parts[0] < $min || $parts[0] > $max) {
    $valid = FALSE;
  } else if ($parts[1] < 0 || $parts[1] > 59) {
    $valid = FALSE;
  } else if ($parts[2] < 0 || $parts[2] > 59) {
    $valid = FALSE;
  }
}

return $valid;

}


echo is_time("09:13:59");

?>

[thekidscareya]

ok...how would i do it if i didnt want the seconds to be show and just HH:MM?

[drew010]

<?php

function is_time($time, $_24hour = FALSE)
{
    if ($_24hour) {
        $min = 0; $max = 23;
    } else {
        $min = 1; $max = 12;
    }

$parts = explode(':', $time);

$valid = TRUE;
if (sizeof($parts) != 2) {
  $valid = FALSE;
} else {
  if ($parts[0] < $min || $parts[0] > $max) {
    $valid = FALSE;
  } else if ($parts[1] < 0 || $parts[1] > 59) {
    $valid = FALSE;
}

return $valid;

}


echo is_time("09:13");

?> 

[thekidscareya]

thanks a lot