hi everybody,
I just installed Suse on an old Packard Bell.
When the install was at detecting my moden, it hung. I couldn't free it sooooo, I pressed ctrl+alt+backspace.
Yup that killed the process alright.
The machine went right down and upon reboot it is now at the KDE welcome page.
Here... (2 Replies)
Ok, here's the situation....I have this code...
#include <iostream.h>
#include <stdlib.h>
int main()
{
cout << "\nBlah, and Blah\n\n";
system("PAUSE");
return 0;
}
Now, "system("PAUSE")" gets executed before "cout" does, and I have... (2 Replies)
Hello
I am trying to tar a whole directory. My problem is that I have to omitt a special subdirectory.
Can you tell my how I am supposed to do that?
Unfortunately I am not very good in regular expressions and in programming. :(
Thanks for any help.
Greetings
Marcus (1 Reply)
Hi Everyone:
Last Thursday my system come up those error log and haven't show up any details. Does anyone know what it mean? I need help :confused:
9359F226 0424184208 N U LVDD
00D2B9FE 0424183208 N U tok0
D0775966 0424182908 N U tok0
A9428A1A 0424170108 N U tok0
71B416E1 ... (0 Replies)
This may seem like an odd question, but I've heard that on old Alpha servers running OpenVMS, you could pause the system so that the OS is essentially suspended for a small period of time, then unpause it and it would pick up where it left off. During the pause, all CPU cycles would be halted, all... (3 Replies)
I am running OpenIndiana development version oi_148 32-bit on a seven-year-old Dell Inspiron 8600.
Seems to be running fine except for one particular annoyance: It freezes whenever a system bell/beep plays.
I have mitigated this by turning the system bell off in gnome-terminal, which I use... (3 Replies)
Hi Experts,
I have a code like this.
=====
#include....
int main()
{
int count = 0;
while(1){
printf("\n Interation number is: %d \n ",count);
rv = system(" test.sh > log.txt " );
if (-1 == rv)
{
printf("Could not generate static log: error... (12 Replies)
Discussion started by: binnyjeshan
12 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)