String Filtering

[alsaffar]

Hi there,

If I have a text box that the user will enter keywords to search a databse, then I want to filter his string according to the follwoing:

1. At least there is one non space character in the string.
2. No more than 1 space between the words in the string.
3. No space at the end of the string.
4. Make the string all lower case.

Lets say the string is: "I Want to be a PILOT "

How can I achieve my goal?

 

[DaRNCaT]

1. At least there is one non space character in the string.
2. No more than 1 space between the words in the string.
3. No space at the end of the string. - trim
4. Make the string all lower case. strtolower()

maybe for the other two you need to use explode() then trim and then implode with a space as the deliminator
Sometimes, when my code just won't behave, I take it outside and make it listen to britney spears music, and when it comes back it's really well behaved. I wonder if it's suffering from post tramatic stress syndrome now..

 

[zyrag]

you can try ereg() function

 

[danielhozac]

[tt]if (preg_match('/[A-Za-z0-9]/', $string)) /* There is at least one alphanumeric character */
{
$search = array('/ +/', /* Replace all occurances of multiple spaces with one */
'/[\r\n\t ]+$/', /* Remove trailing space characters */
'/([A-Z])/e'); /* Replace capital letters */
$replace = array(' ', '', 'strtolower($1)');
$newstring = preg_replace($search, $replace, $string);
}[/tt]
This is somewhat overkill, but does what you want. Refer to the manual for more info about it. //Daniel