I have 2 and three params, both I should make sure thay numbers at one single line insted of checking for each one .
Example I wroote the following way.. checking for 2 and three seperately but I shud be able to do it at on statement
Last edited by Scott; 02-11-2011 at 09:59 AM..
Reason: Adde code tags
Hi all,
I ve a script like....
TBL=employee
sql=`cat abhi.sql` \\ abhi.sql contains ------- select a from $TBL
echo $TBL
echo $sql
SQL=`echo $sql`
echo $SQL
now i want SQL as select a from employee
and as select a from $TBL
How can I achieve this?
Help appriciated (3 Replies)
Hi,
I have one file like 00123. And this file name is generated as a sequence.
So how can I confirm the generated file name is a number, not a special character or alphabets.
Can anybody help me out.
Thanks in advance. (3 Replies)
Hi,
I have a file with data as given
$cat file1.txt
123
234
23e
234.456
234.876e
345.00
I am checking if the values are proper integers using the command.
nawk -F'|' 'int($1)!=$1 {printf "Error in field 1|"$0"\n"}' file1.txt
This is checking for only integers ( without... (10 Replies)
Hey,
I am trying to check if an integer is even in a tcsh script
This is what I am running now
set lattest = ` echo $latmin "%2" | bc -l `
echo $lattest
if ( $lattest == 0 ) then
echo "min is already even"
else if ( $lattest =! 0 ) then
set latmin = ` echo $latmin "+1" |... (2 Replies)
Hey i got trivial question but i cant figure it out. I want to grep a file for multiple unknown parameters. The user will enter these parameters at the command line. For example...
./program red apple filename
This would grep for the phrase red apple. But i cant just do $1 $2 because the... (8 Replies)
Hello,
I would like to control and check the right parameters
$1 must have 4 alphabetics digits among eora qora pora fora
$2 must have 2 numerics digits 00 to 11
$3 must have 2 numerics digits 00 to 59
$4 must have 10 characters alpha numerics as 2013-02-26
For example :
In case 5) if i... (1 Reply)
Hello,
I would like to control and check the right parameters
$1 must have 4 alphabetics digits among eora qora pora fora
$2 must have 2 numerics digits 00 to 11
$3 must have 2 numerics digits 00 to 59
$4 must have 10 characters alpha numerics as 2013-02-26
For example :
In case 5) if i... (15 Replies)
Hello,
May i please know how do i check if the given input argument is one of the listed numbers then success else failure. I am using bash shell.
if
then
echo "success"
else
echo "failure"
fi
Thank you. (2 Replies)
Discussion started by: Ariean
2 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)