Let me preface by saying, I have looked through many threads that deal with keep the decimal, however I'm not sure that any one resolution meets my needs, ok, ok, they could. So maybe it's just that I am not understanding the resolution - therefore I am posting a new thread.
myknowledgebase=at... (2 Replies)
My intention was to build a dual boot XP Pro 64 and Ubuntu media server. I had installed the AMD64 version of Ubuntu 8.10 server and thought that I would be able to install Apache server. I need a GUI to work in. I tried to boot and install Mythbuntu 32 bit 8.10, but my machine now won't recognize... (0 Replies)
Can Ubuntu be used as a decent server? Say a web server, a file server, or a mail server? Also, does Ubuntu play nice with virtualbox? Or should I use another brand of Linux to accomplish these things? (3 Replies)
Hi,
My problem is that I need to set up a DNS server and a mail server. I just know that IP address of the server we have rented.
Can you tell me if I can set up mail server and a DNS server with just the IP address?
Tushar (6 Replies)
hello,
i have been try installing Ubuntu server 12.04 and receiving a message: no network interface card detected. can someone help me to locate where my interface card is (1 Reply)
Hi,
Please help me to find how to calculate the number of TPS supported by any solaris server for example one server with below configuration .
Sun Blade X6270 with two 4-core processors
2 x 300 GB internal disk drives (2 Replies)
Hello.
Doing my first steps in Linux and while trying to configure a DHCP server in Linux i encountered some problems:
TOPOLOGY:
- Laptop with Windows 8.1
- VM Player 12 with Linux installed (Ubuntu Server 14.04)
- ICS-DHCP-SERVER installed and running
- Another LAPTOP conected to a... (1 Reply)
I wonder what free backup utilities fellow admins are using to clone or backup root disks of ubuntu servers. I try clonezilla, but errors pop up.
Any ideas?
---------- Post updated at 02:51 PM ---------- Previous update was at 09:49 AM ----------
I have used the rsync command like:
rsync... (0 Replies)
Discussion started by: fretagi
0 Replies
LEARN ABOUT PHP
eval
EVAL(3) 1 EVAL(3)eval - Evaluate a string as PHP codeSYNOPSIS
mixed eval (string $code)
DESCRIPTION
Evaluates the given $code as PHP.
Caution
The eval(3) language construct is very dangerous because it allows execution of arbitrary PHP code. Its use thus is discouraged.
If you have carefully verified that there is no other option than to use this construct, pay special attention not to pass any user
provided data into it without properly validating it beforehand.
PARAMETERS
o $code
- Valid PHP code to be evaluated. The code mustn't be wrapped in opening and closing PHP tags, i.e. 'echo "Hi!";' must be passed
instead of '<? echo "Hi!"; >'. It is still possible to leave and reenter PHP mode though using the appropriate PHP tags, e.g.
'echo "In PHP mode!"; ?>In HTML mode!<? echo "Back in PHP mode!";'. Apart from that the passed code must be valid PHP. This
includes that all statements must be properly terminated using a semicolon. 'echo "Hi!"' for example will cause a parse error,
whereas 'echo "Hi!";' will work. A return statement will immediately terminate the evaluation of the code. The code will be exe-
cuted in the scope of the code calling eval(3). Thus any variables defined or changed in the eval(3) call will remain visible
after it terminates.
RETURN VALUES eval(3) returns NULL unless return is called in the evaluated code, in which case the value passed to return is returned. If there is a
parse error in the evaluated code, eval(3) returns FALSE and execution of the following code continues normally. It is not possible to
catch a parse error in eval(3) using set_error_handler(3).
EXAMPLES
Example #1
eval(3) example - simple text merge
<?php
$string = 'cup';
$name = 'coffee';
$str = 'This is a $string with my $name in it.';
echo $str. "
";
eval("$str = "$str";");
echo $str. "
";
?>
The above example will output:
This is a $string with my $name in it.
This is a cup with my coffee in it.
NOTES
Note
Because this is a language construct and not a function, it cannot be called using variable functions.
Tip
As with anything that outputs its result directly to the browser, the output-control functions can be used to capture the output of
this function, and save it in a string (for example).
Note
In case of a fatal error in the evaluated code, the whole script exits.
SEE ALSO call_user_func(3).
PHP Documentation Group EVAL(3)