09-29-2007, 01:24 PM
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#4 (permalink)
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The Reckoner
Join Date: Sep 2007
Posts: 437
Thanks: 22
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I think Salathe was trying to ask how you were trying to use these patterns, as some of them seem to be fine. Here's a quick script I wrote to test each pattern:
PHP Code:
<?php
// Test Expression 1
$szTest = '000';
// Works fine
$szPattern = '/^[0-9]{3}$/';
if (preg_match($szPattern, $szTest))
{
echo "Match 1 ok";
}
// Test Expression 2
$szTest = '000-000-00';
// Minor error, see below
$szPattern = '/^[0-9]{3}\-[0-9]{3}\-[0-9]{3}}$/';
// Mine
// Minor change, you had the last clause of the pattern
// looking for 3 numbers, not 2
$szPattern = '/^[0-9]{3}-[0-9]{3}-[0-9]{2}$/';
if (preg_match($szPattern, $szTest))
{
echo "Match 2 ok";
}
// Test Expression 3
$szTest = '00000';
// No change required, works fine
$szPattern = '/^[0-9]{5}$/';
if (preg_match($szPattern, $szTest))
{
echo "Match 3 ok";
}
// Test Expression 4
$szTest = 'www.talkphp.com';
// Few changes required, see below
$szPattern = '/^www\.[a-zA-Z0-9\-]+\.([a-zA-Z\.]{2,4})$/';
// The main problem here is:
// 1) the domain part of the URL is expecting a dot .
// 2) we had an extra close parentheisis character
$szPattern = '/^www\.[a-zA-Z0-9\-]+\.[a-zA-Z]{2,4}$/';
if (preg_match($szPattern, $szTest))
{
echo "Match 4 ok";
}
?>
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