RE: [PHP] Confusing array question ...

[Martin Towell]

Try adding curly braces around the var name, like this:

for($i=0; $icount(${beginning . $value . end}); $i++) {

also, a look at the variable variables manual page will help further

HTH
Martin

-Original Message-
From: John Kelly [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, September 11, 2002 9:27 AM
To: [EMAIL PROTECTED]
Subject: [PHP] Confusing array question ...


Hi, I have 1 primary array called $item containing 20 values each of whose
value is part of the name of 20 other arrays containing various number of
values.  How can I cycle through the primary $item array using a foreach and
within that do a for on each of the 20 secondary arrays dynamically
inserting each of the 20 secondary array names based on the value of the
current primary $item array. Something like the following which obviously
does not work.

?php

foreach($item as $value) {
// do some stuff
for($i=0; $icount($beginning_of_array_name_always_the_same . $value .
end_of_array_name_always_the_same); $i++) {
// do some stuff
}
}

?

I am trying to avoid doing something like the following ...

?php

foreach($item as $value) {
// do some stuff

if($value == 'red'){
$array = $temp_red_file;
} elseif ($value == 'green'){
$array = $temp_green_file;
// and so on for all 20 possibilities
}

for($i=0; $icount($array); $i++) {
// do some stuff
}
}

?

Thanks!



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Re: [PHP] Confusing array question ...

[John Kelly]

Thanks that did it!

Martin Towell [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
 Try adding curly braces around the var name, like this:

 for($i=0; $icount(${beginning . $value . end}); $i++) {





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Re: [PHP] Confusing array question ...

[Zak Greant]

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Hash: SHA1

Hey John,

Actually, you don't seem to far off. You can use a string as a variable name 
by enclosing the string in ${ }.

  i.e: ${foo}


You should be able to write your loop as something like:

  foreach($item as $value) {
  // do some stuff
  foreach(${prefix${value}suffix}  as $v) {
  // do some stuff
  }
  }


All of the normal string and variable rules apply, so you can do things like:

  echo ${ some . $bar .text};
  ${prefix${baz}suffix} = 10;
  ${md5($quux)) = $quux;


There is also the added behavior (benefit?) of being able to use odd values 
for variable names:

  echo ${ \n\t} = Holy Whitespace, Batman!;

HTH!
- --zak

On September 10, 2002 17:26, John Kelly wrote:
 Hi, I have 1 primary array called $item containing 20 values each of whose
 value is part of the name of 20 other arrays containing various number of
 values.  How can I cycle through the primary $item array using a foreach
 and within that do a for on each of the 20 secondary arrays dynamically
 inserting each of the 20 secondary array names based on the value of the
 current primary $item array. Something like the following which obviously
 does not work.

 ?php

 foreach($item as $value) {
 // do some stuff
 for($i=0; $icount($beginning_of_array_name_always_the_same . $value .
 end_of_array_name_always_the_same); $i++) {
 // do some stuff

[chop]
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Version: GnuPG v1.0.7 (GNU/Linux)

iD8DBQE9frG7b6QONwsK8bIRAlehAJ9ivM6lWm3mu68Gy43vKKPvmZo+CgCfdBdf
5IikMTwLaBwKPvoFDz4CfD0=
=CjQD
-END PGP SIGNATURE-


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Re: [PHP] Confusing array question ...

[John Kelly]

Thanks for the examples Zak! I got it working.



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