New line to paragraph function

Question

I have this interesting function that I\'m using to create new lines into paragraphs. I\'m using it instead of the nl2br() function, as it outputs better formatted

Answer 1

@Laurent's answer wasn't working for me - the else statement was doing what the $line_breaks == true statement should have been doing, and it was making multiple line breaks into
tags, which PHP's native nl2br() already does.

Here's what I managed to get working with the expected behavior:

function nl2p( $string, $line_breaks = true, $xml = true ) {

    // Remove current tags to avoid double-wrapping.
    $string = str_replace( array( '
', '
', '
', '
' ), '', $string );

    // Default: Use 
 for single line breaks, 
 for multiple line breaks.
    if ( $line_breaks == true ) {
        $string = '
' . preg_replace(
            array( "/([\n]{2,})/i", "/([\r\n]{3,})/i", "/([^>])\n([^<])/i" ),
            array( "
\n
", "
\n
", '$1$2' ),
            trim( $string ) ) . '
';

    // Use 
 for all line breaks if $line_breaks is set to false.
    } else {
        $string = '
' . preg_replace(
            array( "/([\n]{1,})/i", "/([\r]{1,})/i" ),
            "
\n
",
            trim( $string ) ) . '
';
    }

    // Remove empty paragraph tags.
    $string = str_replace( '
', '', $string );

    // Return string.
    return $string;

}