Hi
I have a question regarding array_intersect () in PHP 4.3. There are several
arrays created on the fly, such as:
$values['apples'];
$values['bananas'];
$values['pears'];
To extract only the values they have in common I tried this:
$command = "array_intersec t(";
for ($i=0; $i<count($value s); $i++) {
$command .= "\$values['$values[$i]'],";
}
$command = substr($command , 0, -1);
$command .= ");";
$result = eval($command);
This does not seem to work and also is quite complicated. Does somebody know
a better solution?
Thanks
Markus 2 5102 I have a question regarding array_intersect () in PHP 4.3. There are several arrays created on the fly, such as:
$values['apples']; $values['bananas']; $values['pears'];
To extract only the values they have in common I tried this:
$command = "array_intersec t("; for ($i=0; $i<count($value s); $i++) { $command .= "\$values['$values[$i]'],"; } $command = substr($command , 0, -1); $command .= ");"; $result = eval($command);
This does not seem to work and also is quite complicated. Does somebody know a better solution?
The user comments in the docs for array_intersect suggest using
call_user_func_ array() to pass an arbitrary number of arguments.
Looks like you should be able to use:
$result = call_user_func_ array( 'array_intersec t', $values );
(untested, got to catch a bus!)
---
Steve
Steve wrote:
[...] The user comments in the docs for array_intersect suggest using call_user_func_ array() to pass an arbitrary number of arguments. Looks like you should be able to use:
$result = call_user_func_ array( 'array_intersec t', $values );
Works perfectly! I had even read this note, but as I did not understand the
examples provided I did not realize that it was what I looked for. Seems
like it's worth to have a closer look at PHP's function functions.
Thanks a lot for your input!
--
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