array_merge with empty array

[etrader]

I want to merge some arrays as

$mixing = array_merge($mixedresult1, $mixedresult2, $mixedresult3);

but the arrays can be empty sometimes. In this case, I will get an error for the empty array as

PHP Warning:  array_merge() [<a href='function.array-merge'>function.array-merge</a>]: Argument #1 is not an array

How I can avoid this error by omitting empty arrays?

[kenrbnsn]

That error is not saying that the array is empty, but that the variable is not an array, so before you do the merge, check to see if the variable is an array and make it an array if it's not:

<?php
$ary1 = (is_array($ary1))?$ary1:array($ary1);
$ary2 = (is_array($ary2))?$ary2:array($ary2);
$ary3 = array_merge($ary1,$ary2);
?>

 

Ken

[etrader]

You are quite right!