Trimming the file using PHP

How to trim the file using PHP.

The Input file is,
         ;           Zone file for

ns              A

email           A
                MX      10 email

www               A
               MX   10 mail        

The Output should be,
; Zone file for

ns A

email A
MX 10 email

www A
MX 10 mail        

There should be only one space between the words.

Sasikumar Natarajan
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$fh = fopen("textFile.txt","r");
$data = fread($fh,filesize("textFile.txt"));

$data = preg_replace("/(\s)\s+/si","\\1",$data);

echo $data; // With only one space.


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Even shorten.

$file = file_get_contents("");
$file = preg_replace("/([\s])[\s]+/","\\1",$file);

No use of having the /i modifier, as you are matching whitespaces...

I know :-) The "i"(case insensitive) flag isn't needed. I put it there by mistake since I so often use it in regexp.


should be enough.

The replacement string should be " " not "\\1" as the zone files he is modifying may have tabs and he wanted spaces, and tabs do match in \s, thus Roonaan's example becomes:

$file = file_get_contents( "" );
$file = preg_replace( "/([\s])[\s]+/", " ", $file );
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Accept: Batalf {http:#13680589}

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