Core Function Unset
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Its worth noting to delete from an array you must use the array directly example unset( $a[400] ) you cannot place that element into a variable then expect to unset it and remove it from the array it will not instead it will simple set the element int the array to zero. | Its worth noting to delete from an array you must use the array directly example unset( $a[400] ) you cannot place that element into a variable then expect to unset it and remove it from the array it will not instead it will simple set the element int the array to zero. | ||
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| + | The class function __Destruct() is called when Unset() is used on a class. | ||
=== Example === | === Example === | ||
Latest revision as of 12:38, 14 June 2015
Unset( $variable )
Contents |
Description
Delete a variable
Parameters
$variable
A variable to delete.
Return Value
Success - Returns true.
Failure - Returns false.
Remarks
This can be used to delete DLLStructs, GUI objects and Classes.
Its worth noting to delete from an array you must use the array directly example unset( $a[400] ) you cannot place that element into a variable then expect to unset it and remove it from the array it will not instead it will simple set the element int the array to zero.
The class function __Destruct() is called when Unset() is used on a class.
Example
unset( $a ); // Delete single variable named unset( $a[500] ); // Delete variable from array unset( $a["test"] ); // Delete variable from hash
