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Dysan
11-29-2007, 02:12 PM
How do I check if an array already exists?

NogDog
11-29-2007, 02:21 PM
isset (http://www.php.net/isset)() will tell you if the variable exists. If you then need to verify that it is an array, use is_array (http://www.php.net/is_array)().

Znupi
11-29-2007, 02:21 PM
if (is_array($array)) {
// This tests if $array is an array
}
// or...
if (count($array)) {
// This tests if there is any data in the array $array.
// If $array is undefined, count($array) will return 0, and this block of code won't get executed
// if $array is defined, but is not an array and let's say it's a string, for example, count($array) will return 1 and this block will be executed
}
// or....
if ( is_array($array) && count($array) ) {
// This tests if $array is an array and if it has any data in it.
}

Hope this helps :)

selvam4win
11-29-2007, 03:29 PM
Thx it is very useful for me