Depending upon the occurence of string 'xyz', I want to remove -t from the input file.
There is not a fixed length input file.
Any suggestions
Input file:
this is xyz line -t of the data
this is line 2 of -t of the data
xyz this is line 3 of -t the file
this is line xyz of the -t file... (1 Reply)
Hi All,
I want to search the string for vowel's occurence and find the no of occurence of each vowels, Could anyone help me out? This is urgent to me...I m new to Shell programming..
Thanks and Regards,
Nids:b: (4 Replies)
I am using awk command for greping an value from the file
the file contains ..
file
----------------------------
content-----------
--------
String main = "81507066666";
------------------------------
i am greping the above value using awk command
NumberToReplace=`cat "file" | grep... (1 Reply)
Hello,
I have active log file i want to grep the last occurrence of the word in that log file the log file gets on increasing and increasing i want to fetch it from live file.
Please guide me, Thanks in advance (4 Replies)
Hi,
I'm a newbie to shell scripting and have searched the forum but couldn't find what i was looking for.
Basically I have a list of filenames like...
123-fileone.txt
I want to be able to extract the prefix up to the first '-'. So I'd end up with 123. I have attempted it using a pretty... (2 Replies)
Hi guys,
I like to find the Line number of Nth Occurence of a Search string in a file.
If possible, if it will land the cursor to that particualar line will be great.
Cheers!! (3 Replies)
Hi Everyone,
I am looking for the unix command by which I can view 10 lines after the 1st occurence of a string (including the 1st occurence)
Example : I have the following lines in a unix file. I have to look for the 1st occurence of the string "How are you" and then view the next 10 lines... (3 Replies)
Hi Everyone,
I am looking for the unix command by which I can view 5 lines after the last occurence of a string (including the last occurence)
Example : I have the following lines in a unix file. I have to look for the last occurence of the string "How are you" and then view the next 5... (5 Replies)
Hi Folks,
I am searching something in multiple logs , actually an even ocuurs which get recorded in logs with a special word so rite now I am opening an individual log in vi and then searching it but total in the directory there are such 15 logs and it is very difficult to go one by one so... (1 Reply)
I have file in which the data looks like this,
01,0000000,xxxxxxx/
02,xxxxxxxx,yyyyyy/
03,test1,41203016,,/
01,0000000,xxxxxxx/
02,xxxxxxxx,yyyyyy/ ... (16 Replies)
Discussion started by: r@v!7*7@
16 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)