parsing template using preg_replace_ca llback()

[mens libertina]

Disclaimer: In addition to reading the skimpy entries at php.net, I've
searched this group and alt.php to no avail.

Basically, I'm trying to use a template to send email reminders, but I
can't use my backreferences the way I would like. (template.inc is not
installed on my host.) If I'm approaching the problem wrong, please
have mercy and tell me how to solve it! :)

I have an array, $info, that looks like this (this is just one user):
Array ( [morgan] =Array
(
[user] =morgan
[name] =Morgan Seppy
[expires] =2006-08-28
)
)

and a sample template file:
Hello, {NAME}!

This is a courtesy reminder that your account, {USER}, is due to
expire on {EXPIRES}.

Please let us know if you need assistance or have questions.

Thanks,
Staff

So, I want to replace the {TAG} with the appropriate item in $info. the
relevant code that doesn't work is (i've deleted my debugging print
statements):

function CreateEmail( $info )
{
$emesg = file_get_conten ts( TMPLFILE );
if(!$emesg)
{ error_log( "Template file, ".TMPLFILE. ", not read.\n", 3,
$errfile ); }
else
{
$tagpatt = '/\{(\w+?)\}/';
$emesg = preg_replace_ca llback( $tagpatt,
create_function ( '$matches, $info',
'$field=strtolo wer($matches[1]);return
$info[$field];' ),
$emesg );
}
}

result:
Warning: Missing argument 2 for __lambda_func() in
/home/content/c/a/j/cajtech/html/awkwords/admin/remind.php(39) :
runtime-created function on line 1

It seems that preg_replace callback() doesn't know that $info exists.

I've also tried just using backrefences, but I couldn't manipulate them
(writing this from memory):
$emesg = preg_replace( $tagpatt, eval( "$info[strtolower("."$ 1".")]"),
$emesg );
Thanks

[Jerry Stuckle]

mens libertina wrote:

Disclaimer: In addition to reading the skimpy entries at php.net, I've
searched this group and alt.php to no avail.

Basically, I'm trying to use a template to send email reminders, but I
can't use my backreferences the way I would like. (template.inc is not
installed on my host.) If I'm approaching the problem wrong, please
have mercy and tell me how to solve it! :)

I have an array, $info, that looks like this (this is just one user):
Array ( [morgan] =Array
(
[user] =morgan
[name] =Morgan Seppy
[expires] =2006-08-28
)
)

and a sample template file:
Hello, {NAME}!

This is a courtesy reminder that your account, {USER}, is due to
expire on {EXPIRES}.

Please let us know if you need assistance or have questions.

Thanks,
Staff

So, I want to replace the {TAG} with the appropriate item in $info. the
relevant code that doesn't work is (i've deleted my debugging print
statements):

function CreateEmail( $info )
{
$emesg = file_get_conten ts( TMPLFILE );
if(!$emesg)
{ error_log( "Template file, ".TMPLFILE. ", not read.\n", 3,
$errfile ); }
else
{
$tagpatt = '/\{(\w+?)\}/';
$emesg = preg_replace_ca llback( $tagpatt,
create_function ( '$matches, $info',
'$field=strtolo wer($matches[1]);return
$info[$field];' ),
$emesg );
}
}

result:
Warning: Missing argument 2 for __lambda_func() in
/home/content/c/a/j/cajtech/html/awkwords/admin/remind.php(39) :
runtime-created function on line 1

It seems that preg_replace callback() doesn't know that $info exists.

It wouldn't. $info is local to this function. You need to have a
variable with global scope - or at least one which is available to the
main code, not just a function.

I've also tried just using backrefences, but I couldn't manipulate them
(writing this from memory):
$emesg = preg_replace( $tagpatt, eval( "$info[strtolower("."$ 1".")]"),
$emesg );
Thanks

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attgl obal.net
=============== ===

[mens libertina]

Jerry Stuckle wrote:

>
It wouldn't. $info is local to this function. You need to have a
variable with global scope - or at least one which is available to the
main code, not just a function.

After I read your post, I declared $info as "$info = array();" at the
top of the program with the same result. Did I misunderstand what you
meant by global scope?

Thanks.

[Jerry Stuckle]

mens libertina wrote:

Jerry Stuckle wrote:

>>It wouldn't. $info is local to this function. You need to have a
variable with global scope - or at least one which is available to the
main code, not just a function.

After I read your post, I declared $info as "$info = array();" at the
top of the program with the same result. Did I misunderstand what you
meant by global scope?

Thanks.

But now your problem is $info in the function is not the same as $info
in the main program.

When declared as a parameter like this, $info is only local to the
function. Any other $info is completely separate from the one in the
function.
--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attgl obal.net
=============== ===

[mens libertina]

Jerry Stuckle wrote:

mens libertina wrote:

After I read your post, I declared $info as "$info = array();" at the
top of the program with the same result. Did I misunderstand what you
meant by global scope?

But now your problem is $info in the function is not the same as $info
in the main program.

When declared as a parameter like this, $info is only local to the
function. Any other $info is completely separate from the one in the
function.

Ugh. So if I can't pass by reference, what options do I have? It
sounds like I can't use preg_replace anywhere but the main body...

<about to throw mouse!>

[Jerry Stuckle]

mens libertina wrote:

Jerry Stuckle wrote:

>>mens libertina wrote:

>>>After I read your post, I declared $info as "$info = array();" at the
top of the program with the same result. Did I misunderstand what you
meant by global scope?

But now your problem is $info in the function is not the same as $info
in the main program.

When declared as a parameter like this, $info is only local to the
function. Any other $info is completely separate from the one in the
function.

Ugh. So if I can't pass by reference, what options do I have? It
sounds like I can't use preg_replace anywhere but the main body...

<about to throw mouse!>

No, you can also make it a global in the function and not pass it as a parm.

The one thing to remember - variable names in a function are only known
within that function. They can't be used outside of it.

Global variables can be used anyplace.
--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attgl obal.net
=============== ===

[mens libertina]

Jerry Stuckle wrote:

No, you can also make it a global in the function and not pass it as a parm.

The one thing to remember - variable names in a function are only known
within that function. They can't be used outside of it.

Global variables can be used anyplace.

OK, I used the global keyword and verified it (via print_r() ) in the
function, but I get nothing when I add print statements to
preg_replace_ca llback() :

$tagpatt = '/\{(\w+?)\}/';
$emesg = preg_replace_ca llback( $tagpatt,
create_function ( '$matches',
'print_r($match es);print_r($in fo);$field=strt olower($matches[1]);return
$info[$field];' ),
$emesg );
It seems like p_r_c() can't do what I want, but it's seems to be
designed for just this type of backreference manipulation. Am I just
going about this the wrong way?

[Jerry Stuckle]

mens libertina wrote:

Jerry Stuckle wrote:

>>No, you can also make it a global in the function and not pass it as a parm.

The one thing to remember - variable names in a function are only known
within that function. They can't be used outside of it.

Global variables can be used anyplace.

OK, I used the global keyword and verified it (via print_r() ) in the
function, but I get nothing when I add print statements to
preg_replace_ca llback() :

$tagpatt = '/\{(\w+?)\}/';
$emesg = preg_replace_ca llback( $tagpatt,
create_function ( '$matches',
'print_r($match es);print_r($in fo);$field=strt olower($matches[1]);return
$info[$field];' ),
$emesg );
It seems like p_r_c() can't do what I want, but it's seems to be
designed for just this type of backreference manipulation. Am I just
going about this the wrong way?

Yes, it can do what you want. The question is - are you getting any
matches? I'm far from an expert on regex's, but it looks like you
aren't getting any matches.

If the code is as you indicate, you should, however. What happens if you
print $tagpart and $emesg?

Also - do you get any output after the call to preg_replace_ca llback
(just to make sure there isn't a runtime error you aren't seeing)?

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attgl obal.net
=============== ===

[mens libertina]

Jerry Stuckle wrote:

Yes, it can do what you want. The question is - are you getting any
matches? I'm far from an expert on regex's, but it looks like you
aren't getting any matches.

If the code is as you indicate, you should, however. What happens if you
print $tagpart and $emesg?

Also - do you get any output after the call to preg_replace_ca llback
(just to make sure there isn't a runtime error you aren't seeing)?

Here's is my create_function output:

Array ( [0] ={NAME} [1] =NAME ) Array ( [0] ={USERNAME} [1] =>
USERNAME ) Array ( [0] ={EXPIRES} [1] =EXPIRES )

Hello, !

This is a courtesy reminder that your account, , is due to expire on .

Please let us know if you need assistance or have questions.

Thanks,
Staff

[mens libertina]

mens libertina wrote:

Jerry Stuckle wrote:
Here's is my create_function output:

Array ( [0] ={NAME} [1] =NAME ) Array ( [0] ={USERNAME} [1] =>
USERNAME ) Array ( [0] ={EXPIRES} [1] =EXPIRES )

Hello, !

This is a courtesy reminder that your account, , is due to expire on .

Please let us know if you need assistance or have questions.

Thanks,
Staff

oops, I forgot to mention that the template with the missing tag info
is *after* p_r_c().

thanks for all your help and quick responses!