is_resource
(PHP 4, PHP 5, PHP 7, PHP 8)
is_resource — Finds whether a variable is a resource
Parameters
-
value -
The variable being evaluated.
Return Values
Returns true if value is a resource,
false otherwise.
Examples
Example #1 is_resource() example
<?php
$handle = fopen("php://stdout", "w");
if (is_resource($handle)) {
echo '$handle is a resource';
}
?>
The above example will output:
$handle is a resource
Notes
Note:
is_resource() is not a strict type-checking method: it will return
falseifvalueis a resource variable that has been closed.
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