writing a PHP file with PHP

[Vivid Lust]

Hi all, Im wondering how I can write a PHP file with PHP?? Its because Im making an install program where the database details are put into the Config.php file.

 

Any ideas please?

 

Thanks lots!!! 

[nicholasstephan]

If you're looking to have a 1-time install function that writes a php file, take a look at:

 

http://us.php.net/manual/en/ref.filesystem.php

 

Have your system check for the existence of a config.php file. If it's not found they're redirected to the installation page, which builds and saves that config.php, and redirects them back to where they started.

 

If you're looking to execute code dynamically, ie: pull some code out of a database and execute it, take a look at the eval() function.

 

Hope this helps...

 

 

cheers

[Vivid Lust]

Could anyone give me an abriged example of building a config file (I've done the form which then checks the connection,) just dont know how to get the POST data into a file which has the following in:

 

<?php
$dbhost = 
$dbuser = 
$dbpass = 
$dbname = 
$tbl_name = 
?>

 

Thanks

[drisate]

fopen and fwrite ;-)

 

The fopen function needs two important pieces of information to operate correctly. First, we must supply it with the name of the file that we want it to open. Secondly, we must tell the function what we plan on doing with that file.

 

Since we want to create a file, we must supply a file name and tell PHP that we want to write to the file. Note: We have to tell PHP we are writing to the file, otherwise it will not create a new file.

PHP Code:

 

$ourFileName = "config.php";

$ourFileHandle = fopen($ourFileName, 'w') or die("can't open file");

fclose($ourFileHandle);

 

The file "config.php" should be created in the same directory where this PHP code resides. PHP will see that "config.php" does not exist and will create it after running this code.

 

Now we can use the fwrite command to add data to our file. We would do this as shown below:

 

<?php

$File = "YourFile.txt";

$Handle = fopen($File, 'w');

$Data = "Jane Doe\n";

fwrite($Handle, $Data);

$Data = "Bilbo Jones\n";

fwrite($Handle, $Data);

print "Data Written";

fclose($Handle);

?>

[9three]

Wit

fopen and fwrite ;-)

 

The fopen function needs two important pieces of information to operate correctly. First, we must supply it with the name of the file that we want it to open. Secondly, we must tell the function what we plan on doing with that file.

 

Since we want to create a file, we must supply a file name and tell PHP that we want to write to the file. Note: We have to tell PHP we are writing to the file, otherwise it will not create a new file.

PHP Code:

 

$ourFileName = "config.php";

$ourFileHandle = fopen($ourFileName, 'w') or die("can't open file");

fclose($ourFileHandle);

 

The file "config.php" should be created in the same directory where this PHP code resides. PHP will see that "config.php" does not exist and will create it after running this code.

 

Now we can use the fwrite command to add data to our file. We would do this as shown below:

 

    <?php

    $File = "YourFile.txt";

    $Handle = fopen($File, 'w');

    $Data = "Jane Doe\n";

    fwrite($Handle, $Data);

    $Data = "Bilbo Jones\n";

    fwrite($Handle, $Data);

    print "Data Written";

    fclose($Handle);

    ?>

 

With that added. Now all you need to do is include the config.php into where ever it's suppose to go.

 

Reminder: Becuase the config.php will not exist and/or not have the proper variables assigned, you need to create a check, otherwise you will run into some errors.

[drisate]

Wit

fopen and fwrite ;-)

 

The fopen function needs two important pieces of information to operate correctly. First, we must supply it with the name of the file that we want it to open. Secondly, we must tell the function what we plan on doing with that file.

 

Since we want to create a file, we must supply a file name and tell PHP that we want to write to the file. Note: We have to tell PHP we are writing to the file, otherwise it will not create a new file.

PHP Code:

 

$ourFileName = "config.php";

$ourFileHandle = fopen($ourFileName, 'w') or die("can't open file");

fclose($ourFileHandle);

 

The file "config.php" should be created in the same directory where this PHP code resides. PHP will see that "config.php" does not exist and will create it after running this code.

 

Now we can use the fwrite command to add data to our file. We would do this as shown below:

 

    <?php

    $File = "YourFile.txt";

    $Handle = fopen($File, 'w');

    $Data = "Jane Doe\n";

    fwrite($Handle, $Data);

    $Data = "Bilbo Jones\n";

    fwrite($Handle, $Data);

    print "Data Written";

    fclose($Handle);

    ?>

 

With that added. Now all you need to do is include the config.php into where ever it's suppose to go.

 

Reminder: Becuase the config.php will not exist and/or not have the proper variables assigned, you need to create a check, otherwise you will run into some errors.

 

and you can do that like this

 

<?php

$filename = '/pathto/config.php';

 

if (file_exists($filename)) {

echo "The file $filename exists";

} else {

echo "The file $filename does not exist";

}

?>

[Vivid Lust]

so how would I add this to the config file for example:

 

<?php
$foo = $bar; 
?>

[drisate]

Hey bro are you kidding me? I just told you how ... and it even been quoted 2 times ...

 

<?php

$File = "config.php";

$Handle = fopen($File, 'w');

$Data = '$foo = '.$bar.'; \n';

print "Data Written";

fclose($Handle);

?>

 

 

[premiso]

<?php
$writeTo = "<?php\n\$foo = \$bar;\n?>";
$fh = fopen('config.php', "w+");
fwrite($fh, $writeTo);
fclose($fh);
?>

 

Simple as that.