You know that you're trying to get the backticks to nest, but the shell doesn't. It sees the command as:
The korn shell introduced a new syntax to deal with this. Instead of
`echo $var`
do
$(echo $var)
But why do `echo $var` at all? In most cases, you can just use $var.
hi,
when i try to compile, i got the following error message, what does it mean?
$gcc auto.cpp
/usr/tmp/ccmuE12B.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status
thanks (1 Reply)
When I start ed as regular user, following message is displayed:
$ed
ERROR: tempnam failed: Permission denied
$
I think, following error produced in vi when search results from previous error:
No previous regular expression
Setting TMPDIR variable cause no effect.
As root all works... (6 Replies)
Hi all,
i executed a script.
cat <filename> | grep <pattern> | awk '{print $1}' | read a
i get the answer when i execute it in the shell env (no problem with that)
as
./<name>.ksh
when i tried the same in cron (as an entry in cron)
value is not being read in the variable a through... (1 Reply)
All,
I am trying to copy some data from /admin/reports/Sept/ccn/c_ivsstr01 to /home/users/myhomedir and I am getting an error I have never seen before:
The file access permissions do not allow the specified action.
The permissions on the file are -rw-r--r-- and I am the owner of the file... (3 Replies)
I have a shell script which mails a file. It runs fine when executed at prompt, but from cronjob the following line gives an error:
$ /opt/local/bin/mpack -s "TTW posts " $FILEPATH/ttw.html myemail@gmail.com
Error is : (some junk chars) followed by No such file or directory.
Before this... (5 Replies)
Hi folks
I am facing a strange error while splitting a '|' delimited file 'file1' based on column '3'. (File is 40 columns wide).
I wish to create as many files 'file_n' from the file 'file1' as distinct values of the column '3'; in 'file1'
eg: file1:
qwe|qweqw|123|fg... (3 Replies)
Howdy all, I have a scritp that does a sqldump. But for some goofy reason, a certain part of it behaves uber strange.
It does a daily dump of my sql, according to parameters I enter in hardcode.
The script is:
#!/bin/bash
APP_NAME="app_com_site"
wikiname="wiki_com_site"
... (8 Replies)
I am receiving an error when i type the command dmesg
sudo: sysmon : pam_authenticate: Conversation failure ; TTY=unknown ; PWD=/export/home/sysmon ; USER=root ; COMMAND=/opt/scripts/cronmgmt/synch_crontab.ksh
Whats it about and how can I remove it ? (1 Reply)
more run.sh
!/bin/bash
input="data.txt"
while IFS= read -r var
do
startdir="/web/logs"
searchterm=$(echo $var | awk -F'=' '{print $1}')
replaceterm=$(echo $var | awk -F'=' '{print $2}')
find "$startdir" -type f -exec grep -l "$searchterm" {} + |
while read file
do if sed -e... (1 Reply)
Discussion started by: mohtashims
1 Replies
LEARN ABOUT PHP
var_export
VAR_EXPORT(3) 1 VAR_EXPORT(3)var_export - Outputs or returns a parsable string representation of a variableSYNOPSIS
mixed var_export (mixed $expression, [bool $return = false])
DESCRIPTION var_export(3) gets structured information about the given variable. It is similar to var_dump(3) with one exception: the returned represen-
tation is valid PHP code.
PARAMETERS
o $expression
- The variable you want to export.
o $return
- If used and set to TRUE, var_export(3) will return the variable representation instead of outputting it.
RETURN VALUES
Returns the variable representation when the $return parameter is used and evaluates to TRUE. Otherwise, this function will return NULL.
NOTES
Note
When the $return parameter is used, this function uses internal output buffering so it cannot be used inside an ob_start(3) callback
function.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.1.0 | |
| | |
| | Possibility to export classes and arrays con- |
| | taining classes using the __set_state() magic |
| | method. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
var_export(3) Examples
<?php
$a = array (1, 2, array ("a", "b", "c"));
var_export($a);
?>
The above example will output:
array (
0 => 1,
1 => 2,
2 =>
array (
0 => 'a',
1 => 'b',
2 => 'c',
),
)
<?php
$b = 3.1;
$v = var_export($b, true);
echo $v;
?>
The above example will output:
3.1
Example #2
Exporting classes since PHP 5.1.0
<?php
class A { public $var; }
$a = new A;
$a->var = 5;
var_export($a);
?>
The above example will output:
A::__set_state(array(
'var' => 5,
))
Example #3
Using __set_state() (since PHP 5.1.0)
<?php
class A
{
public $var1;
public $var2;
public static function __set_state($an_array)
{
$obj = new A;
$obj->var1 = $an_array['var1'];
$obj->var2 = $an_array['var2'];
return $obj;
}
}
$a = new A;
$a->var1 = 5;
$a->var2 = 'foo';
eval('$b = ' . var_export($a, true) . ';'); // $b = A::__set_state(array(
// 'var1' => 5,
// 'var2' => 'foo',
// ));
var_dump($b);
?>
The above example will output:
object(A)#2 (2) {
["var1"]=>
int(5)
["var2"]=>
string(3) "foo"
}
NOTES
Note
Variables of type resource couldn't be exported by this function.
Note
var_export(3) does not handle circular references as it would be close to impossible to generate parsable PHP code for that. If you
want to do something with the full representation of an array or object, use serialize(3).
Warning
When var_export(3) exports objects, the leading backslash is not included in the class name of namespaced classes for maximum com-
patibility.
SEE ALSO print_r(3), serialize(3), var_dump(3).
PHP Documentation Group VAR_EXPORT(3)