This is the culprit. The "eval" sends the line through the evaluation process a second time, but the first time it has already eaten away your quotation and this second time the newline terminates the line. You have to escape the quotation to protect it for the correct evaluation pass to interpret it.
Notice the difference between:
I hope this helps.
bakunin
Yes, Bakunin. This approach got my problem solved. I had to "save" a second pair of "" for the 2nd evaluation by using \ .
Im facing problem in assigning value of eval array variable as normal variable..
x=0
eval DATA${x}="FJSVcpcu"
x=`expr $x + 1`
eval DATA${x}="FJSVcsr"
if x=0, type -> eval echo \$DATA$x , its give me FJSVcpcu
i want assign this value into an variable as
variable=`eval echo... (3 Replies)
Hello,
I have a script that does an scp to a server and then gets the number of process running on that server, the o/P should be stored in a variable for further processing
eval `echo "ssh -q $Infa_user@$host 'csh -c $CMD '"`
where
CMD="ps -ef | grep -i ${INFA_REPO} | grep -v grep | wc... (2 Replies)
Hi,
i have an issue with eval and variable assignment.
1) i have a date value in a variable and that date is part of a filename,
var1=20100331
file1=${var1}-D1-0092.xml.zip
file2=${var2}-D2-0092.xml.zip
file3=${var3}-D3-0092.xml.zip
i am passing the above variables to a script via... (11 Replies)
Hi,
I'm trying to assign a score to each row which will allow me to identify which rows differ. In the example file below, I've used "," to indicate column separators (my actual file has tab separators). In this example, I'd like to identify that row 1 and row 5 are the same, and row 2 and row... (4 Replies)
Hi Gurus,
I am having 2 parameters as below
parm1=value1
parm2=parm1
I want to evaluate parm1 value using eval echo \$$parm2 and later i want to assign this value to other variable which i will be using in if statement like :
if ]; then
do this.......
fi
could you please suggest... (5 Replies)
Hi pls help me out to short out this problem
rm PAB113_011.out
rm: PAB113_011.out: override protection 644 (yes/no)? n
If i give y it remove the file.
But i added the rm command as a part of ksh file and i tried to remove the file. Its not removing and the the file prompting as... (7 Replies)
pattern1=book
{
x=1
eval echo \$pattern$x
}
book (this is the output)
But when I assign a variable to the output of the eval it doesn't work unless I prefix 2 times backslash before $ as shown below.
{
a=`eval echo \\$pattern$x`
echo $a
}
book
Why here twice "\" has to be... (3 Replies)
Is there a safe way to evaluate variable declarations within a script whether they come from a .conf file, user input, or stdin?
Example .conf file:
server=ftp.xxxx.com
port=21
user="$USER" # Hopefully allow this type of substitution
domain="$DOMAIN"
server="$(malicious... (4 Replies)
Discussion started by: Michael Stora
4 Replies
LEARN ABOUT PHP
addslashes
ADDSLASHES(3) 1 ADDSLASHES(3)addslashes - Quote string with slashesSYNOPSIS
string addslashes (string $str)
DESCRIPTION
Returns a string with backslashes before characters that need to be escaped. These characters are single quote ( '), double quote ( "),
backslash ( ) and NUL (the NULL byte).
An example use of addslashes(3) is when you're entering data into string that is evaluated by PHP. For example, O'Reilly is stored in
$str, you need to escape $str. (e.g. eval("echo '".addslashes($str)."';"); )
To escape database parameters, DBMS specific escape function (e.g. mysqli_real_escape_string(3) for MySQL or pg_escape_literal(3),
pg_escape_string(3) for PostgreSQL) should be used for security reasons. DBMSes have differect escape specification for identifiers (e.g.
Table name, field name) than parameters. Some DBMS such as PostgreSQL provides identifier escape function, pg_escape_identifier(3), but not
all DBMS provides identifier escape API. If this is the case, refer to your database system manual for proper escaping method.
If your DBMS doesn't have an escape function and the DBMS uses to escape special chars, you might be able to use this function only when
this escape method is adequate for your database. Please note that use of addslashes(3) for database parameter escaping can be cause of
security issues on most databases.
The PHP directive magic_quotes_gpc was on by default before PHP 5.4, and it essentially ran addslashes(3) on all GET, POST, and COOKIE
data. Do not use addslashes(3) on strings that have already been escaped with magic_quotes_gpc as you'll then do double escaping. The func-
tion get_magic_quotes_gpc(3) may come in handy for checking this.
PARAMETERS
o $str
- The string to be escaped.
RETURN VALUES
Returns the escaped string.
EXAMPLES
Example #1
An addslashes(3) example
<?php
$str = "Is your name O'Reilly?";
// Outputs: Is your name O'Reilly?
echo addslashes($str);
?>
SEE ALSO stripcslashes(3), stripslashes(3), addcslashes(3), htmlspecialchars(3), quotemeta(3), get_magic_quotes_gpc(3).
PHP Documentation Group ADDSLASHES(3)