Hello,
This one has me stumped, although I suspect it might be easy. I have a file and need to split the entries into two varaibles. The format for a positive is 'AANNNN' where A is alpha and N is numeric.
Thanks in advance (5 Replies)
Hi Experts,
I want to extract the value of SESSIONID AND USERID from the this string using perl.
XML Request },"USER_PREF":{"sys_lang":"en-us","timezone":"480","user_lang":"en-us"}}}</DEVICESIG></POLICYREQ>]
The answer should be SessionID=1:3133050 and USERID=01451651
Please advise how... (3 Replies)
I want to know how to, given a string like W87151WR71C, if the 4th and 5th character (in this case 15) are greater than 45, then to add 1 to the 3rd character (in this case 7) and assign the revised string the variable name MODSTRING.
Thanks in advance. This is ultimately to grab info from... (6 Replies)
Hi java programmers
I'm a newbee to the Java. Could please help me to set the path correctly. I'm getting the following error.
----jGRASP exec: javac -g C:\Documents and Settings\bogugk\Desktop\HelloWorldApp.java
----jGRASP wedge2 error: command "javac" not found.
---- This command... (1 Reply)
Hi all,
I am trying to grep something from log file.
For example. i need to grep sting = "*834*1"
My LOG
2010-05-05 09:27:57,649|3|ABCD834|192.168.38.72|2365|444850623031|0|8|-|0|*834*1*1499413*00853662524#|470540.7219101273026475158
2010-05-05... (3 Replies)
#! /bin/bash
if ; then
echo "Set number "
else
k=$1
sqlplus ${scheme}/${apsswd}@${server} @query.sql $k
fi
file query.sql looks like this
select * from tab1 where number =${k};
===================================
it doesnt work
my question is how to assign k value in last... (2 Replies)
Hi,
1. I want to remove the line which contains "SUBPARTITION", but the condition is
if line has ends with "),"
replace with ,
else
delete the line
I was trying with the sed command i... (3 Replies)
I'm trying to use awk in a script to search for a string number in a plist file.
basically its a plist that records the bandwidth usage, and if the number is greater than 3GB which is equals 3221225472 bytes, it will send me an alert by email.
here is the file:
=<?xml version="1.0"... (4 Replies)
Discussion started by: ivaldiz
4 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)