deleting specific line from a text file, using PHP...

Take the double quotes off of $pLine in your array_search statement.

It deletes the first line (0 indexed) because array_search returns 0, that is false: it doesn't find the element you're looking for because (I think) you miss a semicolon in your code:

$pLine='17555245531:secret@sip.mysip.com'

instead of

$pLine='17555245531:secret@sip.mysip.com';

Try this while I test your code.

Cheers

Hello Barry62, there was no change once I removed the double quotes, the line that gets deleted is [general].

The problem is that when you explode your text you get an array umber indexed:

    [1] => srvlookup=yes
    [2] => register =>17555245531:secret@sip.mysip.com
    [3] => nat=yes
    [4] => defaultexpiry=100
    [5] => qualify=yes
    [6] => register...
    [7] => canreinvite=no
    [8] => bindport=5060
    [9] => bindaddr=0.0.0.0
    [10] => autoreload=always

So the value you should looking for is

'register =>17555245531:secret@sip.mysip.com'

$txt = file_get_contents($file); 
        $Blocks = explode(PHP_EOL, $txt); 
		$pLine='register =>17555245531:secret@sip.mysip.com'
		$del= array_search("$pLine",$Blocks); 
		unset($Blocks[$del]);

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yes, that is why I was wondering if I could search for a specific string in the line and delete the whole line if the string was found.

Thank you.

try in_array() instead of array_search().  It uses a loose comparison.  also, MarqusG is correct.  Put a semicolon on the 3rd line of your code.

If you prefer input array be reindexed you can use array_splice:

$txt = file_get_contents($txt);
$Blocks = explode(PHP_EOL, $txt); 
$pLine='17555245531:secret@sip.mysip.com';
for ($i = 0; $i < count($Blocks); $i++){
  if (stristr($Blocks[$i], $pLine)) $del = $i;
}
array_splice($Blocks, $del, 1);

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I would've just said to use a preg_replace:

$txt = file_get_contents($txt);
$txt = preg_replace("/\bregister =>.+[\n\r]+/","",$txt);

Thank you Marcus, it works great!

Thank you...

Glad to help you! On to the next, aej1973.