note 66811 added to function.is-array
| From: | jupiter at nospam dot com | Date: | Tue, 30 May 2006 06:42:48 +0000 |
| Subject: | note 66811 added to function.is-array | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-112525@lists.php.net to get a copy of this message | ||
Will check a Multi-Dimentional Array to any specified level. This is a fix to 11/16/05 submission,
which would break since you must supply a foreach with an array. Beware recursive functions
shouldn't go over 100 deep or could break the memory stack on server.
<?php
// checks for multiarray to defined depth level recursively
// original $level must be 2 or more, else will instantly return true
function isDeepMultiArray($multiarray, $level = 2) { // default is simple multiarray
if (is_array($multiarray)) { // confirms array
if ($level == 1) { // $level reaches 1 after specified # of recursions
return true; // returns true to recursive function conditional
} // end conditional
foreach ($multiarray as $array) { // goes one level deeper into array
if (isDeepMultiArray($array, $level - 1)) { // check subarray
$message = "I'm a multiarray"; // optional message
return $message; // best if $message = true so function returns boolean
} // end recursive function
} // end loop
} else { // not an array at specified level
return false; // is also used recursively so can't change to message
}
}
if (isDeepMultiArray(array(array()), 2)); // beware this returns true eventhough arrays are empty
?>
BTW my notation is consistent with the PEAR manual on coding standards, which is what php.net says
to follow. I hope a function like this gets included in PHP6.
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Manual Page -- http://www.php.net/manual/en/function.is-array.php
Edit -- http://master.php.net/note/edit/66811
Del: integrated -- http://master.php.net/note/delete/66811/integrated
Del: useless -- http://master.php.net/note/delete/66811/useless
Del: bad code -- http://master.php.net/note/delete/66811/bad+code
Del: spam -- http://master.php.net/note/delete/66811/spam
Del: non-english -- http://master.php.net/note/delete/66811/non-english
Del: in docs -- http://master.php.net/note/delete/66811/in+docs
Del: other reasons-- http://master.php.net/note/delete/66811
Reject -- http://master.php.net/note/reject/66811
Search -- http://master.php.net/manage/user-notes.php