Core Function IsIndexSet
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Revision as of 17:52, 8 December 2011
IndexSet( <array>, <index> )
Contents |
Description
Check if an element exist at a given index ID within an array.
Parameters
array
The array to use.
index
The index to check (starts at 0).
Return Value
Success - Returns 1.
Failure - Returns 0.
Remarks
This cannot be used to check if a hash (dictionary) key exists for that use IsKeySet() instead.
Example
$a = array("One", "Two"); println( "Index 0 is : " . (IsIndexSet($a, 0) ? "SET" : "NOT SET") ); println( "Index 1 is : " . (IsIndexSet($a, 1) ? "SET" : "NOT SET") ); println( "Index 2 is : " . (IsIndexSet($a, 2) ? "SET" : "NOT SET") ); // Delete an index and do it again unset($a[1]); println( "Index 0 is : " . (IsIndexSet($a, 0) ? "SET" : "NOT SET") ); println( "Index 1 is : " . (IsIndexSet($a, 1) ? "SET" : "NOT SET") ); println( "Index 2 is : " . (IsIndexSet($a, 2) ? "SET" : "NOT SET") );
