If the goal is to parse one "template" file into an output file, I've occasionally used PHP for that. The way it restricts itself to running code only inside PHP tags is very helpful, and you can make it as simple or as complicated as you want.
Code:
a
b
c
d
e
f
<?php readfile("filename"); ?>
g
h
i
j
k
l
I'm writing both 8-bit and wide 16-bit data to the screen and an output file. I have no problems with writing out to the screen - for example:
cout<<8-bit data;
wcout<<16-bit data;
Similarly, I have used ofstream for 8-bit and wofstream for 16-bit, for example:
ofstream out;
wofstream wout;... (1 Reply)
I'm new in this.
In C/C++, you define variables in one header file & then simply include it in any files where those variables are referenced.
I tried to include a header named DefineVars- which initializes all the globals- but when I add the line "DefineGlobals" at the begining of another... (2 Replies)
i want to insert a variable in the last column of a file, the columns are separated by "|". I want to insert the variable in everyline of the file . (7 Replies)
Hi all, I am trying to insert couple of lines before first occurance of line3 which occuring after line 5.
So I identified the line 5 line number in the file. Also redirected the all line3 line number to out.txt.
Now I have problem in inserting the line using the variable $rep. Please help me... (2 Replies)
Hey guys ,
i have a variable with the contents ...
NUMBER=4
and a test file with the contents
1248
1213
1214
1278
1200
3045
3444
2130
I want to execute a script that will produce the following output ( based on NUMBER=4) to be ...
create 1248 (1 Reply)
Hi there,
I have a bunch of files that I want to modify.
As a beginner, but nevertheless enthusiast, in the use of the shell I want to create a script enabling me to modify those files quickly.
I had only some partial success with various peaces of scripts but I would like to create one script... (1 Reply)
Hi Guys,
Can someone please help me on adding/inserting a variable to an sql scipt? Basically I want to generate data on monthly (i.e. July 01, 2011 to July 31, 2011) basis. As shown below..
set head off;
set linesize 300;
set pagesize 200;
spool /opt/oracle/temp/output.txt
select... (1 Reply)
Hi,
I am new to unix. I need to insert a variable which contains some lines of text into a text file after fixed number of lines..
Please help me on this..
Thanks in Advance,
Amrutha (3 Replies)
Hello,
I have the following variables set in my env
echo $MY_XSD_FILE
/home/jak/sample.xsd
echo $MY_INTERVAL_VALUE
4
I want to insert them between the xml tags in my xml file
cat sample.xml
:::::::::::::::
:::::::::::::::
<property name="FILE"></property>
:::::::::::::::::::::::... (2 Replies)
hi all
i have a problem in the bash shell. i'd like insert in a variable a file for example :
i have a file datafine.log in this file there is :
17/JUN/2019
i want to insert the value of datafine.log in a variable.
Regards
Frncesco
edit by bakunin: please use CODE-tags for your data... (2 Replies)
Discussion started by: Francesco_IT
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)