If Function eregi() is deprecated

[Webiter]

Seeking to get a newsletter faciliity working. Before I move to a production server I would wish to eliminate the depreciated item that I am picking up in WAMP.

I am being advised as follows on line 146.

Deprecated: Function eregi() is deprecated in C:\wamp\www\newsletter\wespa_php_newsletter_v3\inc\csvfile.php on line 146

Line 146 is identified in the code below -

function open( $mode )
	// opens the data source
	{
		if ( ! $this->handle = fopen( $this->name, $mode ) )
		{
			return false;
		}
		else
		{
			// lock file if opened for write mode
Line 146 =	if ( eregi( "a|w|\+", $mode ) )
			{ flock( $this->handle, 2); }

			$this->eol = feof( $this->handle );
			return true;
		}
	}

How should I apply the 'preg_match' to update this line of the code?

[jscheuer1]

function open( $mode )
    // opens the data source
    {
        if ( ! $this->handle = fopen( $this->name, $mode ) )
        {
            return false;
        }
        else
        {
            // lock file if opened for write mode
        if ( preg_match( '/a|w|\+/i', $mode ) )
            { flock( $this->handle, 2); }

            $this->eol = feof( $this->handle );
            return true;
        }
    } 

Note: preg_match is not case insensitive as was eregi, hence the added i switch:

preg_match( '/a|w|\+/i', $mode )

The only other difference of note here is that with preg_match delimiters must be included within the quoted string which represents the regular expression being used:

preg_match( '/a|w|\+/i', $mode )

I switched from double quotes to single quotes as they're generally safer if not required to resolve variables within them, which they are not here.

For more info, see:

http://us3.php.net/manual/en/function.preg-match.php

[Webiter]

Thanks, Your revison worked a treat.