deleting a line from a file

[graziano]

Hello,

I have a user file user.php which contains following data

name1
name2
name3
name4
..
..

I am trying to write php code to open user.php , find "name2" (for example) , delete it , and save the file . Any idea to do that ?

thank you
Graz

[devinemke]

$filename = 'user.php';
$file = file ($filename);
foreach ($file as $key => $value)
{
if ($value == 'name2') {unset ($file[$key]);}
}
$file = implode ("\n", $file);
$fp = fopen ($filename, 'w');
fwrite ($fp, $file);
fclose ($fp);

[graziano]

thank you very much , I am trying it .

[graziano]

Originally posted by devinemke

$filename = 'user.php';
$file = file ($filename);
foreach ($file as $key => $value)
{
if ($value == 'name2') {unset ($file[$key]);}
}
$file = implode ("\n", $file);
$fp = fopen ($filename, 'w');
fwrite ($fp, $file);
fclose ($fp);

[/B]

your file is good however if I replace
if ($value == 'name2')
with
if ($value == '$name')

it is not able to find the $name .

I tried

if ($value == '$name')
if ($value == $name)

and
if ( ereg($name,$value))

but they are not good to delete only $name.

May you help ?

Thanks

[devinemke]

is $name set? if so then can simply do:
if ($value == $name)

[graziano]

Originally posted by devinemke
is $name set? if so then can simply do:
if ($value == $name)

yes , I send it ($name) using a webform

I tried if ($value == $name)

but the if not satisfied .

suppose I have

line1
line2
line3
line4
line5

If I send $name="line2"
and I use
if ($value == $name)

nothing happens .

If I place an echo $value I receive this
line1 line2 line3 line4 line5

on single line ....

If I use
if ( ereg("^{$cart",$value))} {

it delete all the lines which starts with "line" ...

[devinemke]

perhaps the newlines are screwing things up, try this:

$name = 'name2'; // coming from form

$filename = 'user.php';
$file = file ($filename);
foreach ($file as $key => $value)
{
$value = trim ($value);
$file[$key] = $value;
if ($value == $name) {unset ($file[$key]);}
}
$file = implode ("\r\n", $file);
$fp = fopen ($filename, 'w');
fwrite ($fp, $file);
fclose ($fp);

note that in the above example i am using "\r\n" the windows newline characters. UNIX uses "\n" and Mac uses "\r". you may want to change that depending on your platform.

[graziano]

Originally posted by devinemke
perhaps the newlines are screwing things up, try this:

$name = 'name2'; // coming from form

$filename = 'user.php';
$file = file ($filename);
foreach ($file as $key => $value)
{
$value = trim ($value);
$file[$key] = $value;
if ($value == $name) {unset ($file[$key]);}
}
$file = implode ("\r\n", $file);
$fp = fopen ($filename, 'w');
fwrite ($fp, $file);
fclose ($fp);

note that in the above example i am using "\r\n" the windows newline characters. UNIX uses "\n" and Mac uses "\r". you may want to change that depending on your platform. [/B]

nothing to do , it doesn't work here... however thank you for your help .