eregi problems

[sorenchr]

Hi, im new to the ereg & eregi functions, so after trying hard for 2 hours i gave up. Im trying to create an eregi function, that gives an error, if the target string has anything else but numbers in it. Is this even possible to create?

 

 

[Rohan Shenoy]

If you want to check if the string contains only numbers or not, then use is_numeric() function

<?php
$string="12345";
if(is_numeric($string))
{
echo "String is numeric";
}
?>

 

But this won't work if the string contains more than 1 decimal.

 

 

If you want to use regular expressions, use the below pattern:

$string="123.4.5.";
if(preg_match("/^[0-9.]+$/",$string))
{
echo "String is valid: Numbers and/or decimals";
}
else
{
echo "Invalid";
}

 

Note: I have used preg instead of ereg as I would advise you the same because from PHP 6, ereg would not be bundled with the default PHP package. So ur code might break!

 

btw: is_numeric is faster than preg or ereg.

[MadTechie]

for eregi

try this (for numbers ONLY)

<?php
#$data = "1233"; //works
$data = "123A"; //fails
if (!eregi('^[[:digit:]]+$', $data))
{
echo "Number ONLY Required";
}
?>

 

But Rohan Shenoy is correct, don't use a regex if you can do it another way if(is_numeric($string)) is quicker

[sorenchr]

Thanks!! Works like a charm