check the existence of a string in a text file

Hi everyone.

Here is another PHP problem I am faced with.

is there a way yo check the existence of a string in a text file?

Thanks

 

Yes, but in order to get better help you'd need to be more specific. (examples)

Here's a basic way to do it:

$content = file_get_contents('file.txt');

if (strpos($content, 'your-string') !== false)
{
    // String was found
}

PHP:

 

Thanks a lot

 

sorry I can't edit the post above but I am having this problem, the first entry is always repeated at the beginning and end.

domain1.com
domain2.com
domain3.com
domain1.com

this is the code I am using:

$content = file_get_contents('domains.txt');

if (strpos($content, $domain) == false){
            $File = "domains.txt";
            $Handle = fopen($File, 'a+');
            $Data = "$domain \n";
            fwrite($Handle, $Data);
            fclose($Handle); 
            }  

PHP:

can that be fixed?

 

Do you have each domain in a new line? Try this:

$domains = array_map('trim', file('domains.txt'));

if (!in_array($domain, $domains))
{
	file_put_contents('domains.txt', "{$domain}\n", FILE_APPEND);
}

PHP:

This will add the domain at the bottom of the text file, if it does not exist there already. I think this is what you want to do?

 

Thats it. It works

I just had to add \r net to \n to make it add it on a new line. But thats great.