PHP - Negative Lookahead

I need to match n occurrences of "." in a string following specific rules. The number of occurrences found by the regex should correspond with the exact amount of "."'s in the string.   The rules a 1) every "." must be preceded by at least one digit from 1-9, and can be preceded by up to two other digits from 0-9 (basically, values from 1-999) 2) every "." must be followed by at least one digit from 1-9, and can be followed by up to two other digits from 0-9 (again, values from 1-999).   Sample valid strings a 1) "1.3.5.7.9" 2) "21.23.25.27.29"   Sample invalid strings a 1)"01.5.7.9" (first digit of the number preceding the dot cannot be a zero) 2) "1.05.7.9" (first digit of the number preceding or following the dot cannot be a zero) 3) "1.5.7777.9999" (cannot have more than 1 digit with value 1-9 and up to two more digits with value 0-9 (so up to 3 digit numbers); here we have four digit numbers)   I'm using preg_match_all to match all occurrences of the dot in the string, and I'm using lookaheads seeing that the digits matched are shared between the dots (the same digit that is preceding a dot is following another dot). The problem is, when I have two or three digit numbers, I'm getting more matches than I need.   Here is my pattern: /(?=([1-9][0-9]{0,2}\.[1-9][0-9]{0,2}))/ Here is my test subject: "Mt1,1-15.17.19"   There are only two dots, but I am getting four matches:   array (

How do I reverse the logic of my Regex statement so it says, "If there is NOT a match..."
Code: [Select]
// (Replacement for non-supported Email-Filter.)
if (preg_match('#^[A-Z0-9_\+-]+(\.[A-Z0-9_\+-]+)*@[A-Z0-9-]+(\.[A-Z0-9-]+)*\.([A-Z]{2,7})$#i',
$trimmed['senderEmail'])){
// Valid Email.
// ???
}else{
// Invalid entry.
$errors['senderEmail'] = 'Please enter a valid E-mail address.';
}// End of VALIDATE ENTRY.

I want to do this so I don't have an empty THEN statement!


Debbie

<?php
if ($beyondportal % 26 == 0 || $beyondportal == 0){ ?>
MY CONTENT
<?php } ; ?>


This code compares my variable $beyondportal and if it is a multiple of 26 counting up from 0, it prints my content.

This is great but sometimes the number comes up a negative that is a multiple counting down from 0 like  -26, -52, etc..

if I could do the opposite of a modulus I would think it would work but I'm not sure how to in php. any suggestions?

Hi all

I am adding some positive and negative numbers.

But i am getting strange output. Can anyone help me

Here is the code.

Code: [Select]
$sum=7.50+6.45+12.90+12.00+13.00+0.61+32.00+4.00+27.00+18.00+10.88+129.50+92.94-100.00-38.25+76.80-305.33;
echo "<br>Total: ".$sum;

Basically i have to get Total is 0

but i am getting total is 5.6843418860808E-14

Can anyone help me out Please

I have a code to sum up a field called quantityHand in MySQL, in my example below, the value always return 40 as a positive number instead of 40.00-

0.00
0.00
40.00-

I have used intval() or floatval() function to convert the type of variable from string to int/float but still not working. Any help please?

Here is the code

Code: [Select]
$sql = mysql_query("SELECT DISTINCT itemNumber, itemDesc, quantityHand, SUM(quantityHand) AS quantityHand FROM inventory where itemNumber like '%$term%' GROUP BY `itemNumber` ORDER BY `itemNumber`");


while ($row = mysql_fetch_array($sql)){
  echo "<b>";
echo "</td><td style=\"text-align: center;\"><b>";
echo $row['itemNumber'];
echo "</td><td style=\"text-align: center;\"><b>";
echo $row['itemDesc'];
//echo "</td><td style=\"text-align: right;\">";
echo "</td><td style=\"text-align: center;\"><b>";
echo $row ['quantityHand'];
echo "</td></tr>";
    echo "</b>";