writing file using php with var

Question

I'm writing a php file that load data and save them to php file, every things works fine except when I'm trying to write a var (as var) into the file like:

$content="include 'pages/page1.html'; 
include 'pages/page2.html';";

$content.="$ChangingPage";
$content.="include 'pages/page3.html';;

I get error:

Notice: Undefined variable: ChangingPage in /MYHOST/pages/write_properties.php on line 75

I want the new php file to contain the ChangingPage as var ($)

The error looks pretty self-explanatory. You haven't defined $ChangingPage anywhere in your code, as far as I can tell. Also, I have no idea what are you trying to do with the $content variable declaration in the first line. — Amal
– Amal, Commented Oct 8, 2013 at 15:36
As I understand it, they are trying to output text that happens to be code and doesn't want it to execute — RyanS
– RyanS, Commented Oct 8, 2013 at 15:42

RyanS · Accepted Answer · 2013-10-08 15:36:05Z

5

In php when you use quotes it will automatically use a variable when you use a dollar sign. It will also use the variable value when you use quotes and wrap the variable in { } brackets

To avoid this escape the dollar sign or switch to ' instead of "

$a = "text"; //text
$b = "$a"; //text
$c = "{$a}"; //text

$d = '$a'; //$a
$e = '{$a}'; //{$a}
$f = "\$a"; //$a

answered Oct 8, 2013 at 15:36

RyanS

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2 Comments

gloomy.penguin Over a year ago

or escape the dollar sign... " \$variablename "

Gil Josef Over a year ago

I tried it and it works, but now my new php doesn't run, the script is good I've missing ; or something like ;-)

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