Hi my lovely friends,
Im writing one pgm in which i trying to assign some values like
$var='Jun 6'
but if i do echo of this $var will trim the spaces expect one space.
$echo $var
$Jun 6
But if var='Jun 28', then this will works fine
$echo $var
$Jun 28
this is required to exctract... (2 Replies)
I have a variable that calls in a string from txt file. Problem is the string comes with an abundance of white spaces trailing it. Is there any easy way to trim the tailing white spaces off at the end? Thanks in advance. (9 Replies)
Hi,
I want to trim +with leading zero's with amount fields.I know using awk for trimming leading zeros with +,but I want get the entire row itself.
cat file_name |awk -F " " '{printf "%14.4f%f\n",$4}'
ex:
10 xyz bc +00000234.4500
20 yzx foxic +002456.000
Expexted
10 xyz bc... (3 Replies)
friends,
I have a script in solaris 10 SPARC system which is like this
date '+Time: %m/%d/%y %H:%M:%S'
echo " GDBRR GDLRR GDBWR GDLWR GDRRR GDRWR "
sar -b 10 10 |/usr/xpg4/bin/awk '!/Average/ && !/SunOS/ && !/bread/ {$1="";T=$2;T1=$3;T2=$5;T3=$6;T4=$8;T5=$9}{print(T"\t",... (1 Reply)
I'm trying to parse an output log and I've managed to reduce the output to the lines I need. But I'm having trouble pulling out only the info I'm interested in. The output is 40+ lines and here is a sample
Installing AppFresh 0.8.5.pkg from ./InstallerFiles/CustomPKG/26 (26)
Installing... (2 Replies)
My file looks like this:
But I would like to 'trim' all sequences to the same lenght 32 characters, keeping intact all the identifier (>GHXCZCC01AJ8CJ)
Would it be possible to use awk to perform this task? (2 Replies)
I have a file which contains certain records about users. the row length is always fixed to 205 characters.
Now I want to read each record line from the file, substring some portion out of it and put into another file. But I have observed that my script is trimming the extra spaces I have used for... (4 Replies)
Hi guys,
when I take substring of a particular data using this command
var=substr($0,11,10)
it comes with spaces, when I am trying to trim the spaces it is not allowing me to do that.
Can you please help me out on that.
As I have to reverse the output of the variable also.
---------- Post... (0 Replies)
Hi All,
I am using following script to name the file base of some values
#!/bin/sh
sourcefile=$1
awk '
BEGIN{ n = 1; name = "FILEFILE12" n ".txt"; }
{
if (substr($0,1,10) == "FILEFILE12")
{
close (name)
n++
a = substr($0,11,10);
b = substr($0,21,5);
name = b "_Src_" a ".txt"
}... (6 Replies)
Discussion started by: manish8484
6 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)