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get_resource_id

Description

The get_resource_id Variable Handling for PHP returns an integer identifier for the given resource.

Syntax

get_resource_id(
    resource $resource
): int

Parameters

resource

The evaluated resource handle.

Return

The int identifier for the given resource.

This function is essentially an int cast of resource to make it easier to retrieve the resource ID.

Examples

1 · resource

<?

$filename = $_SERVER["DOCUMENT_ROOT"] . "/assets/txt/1.txt";
$mode = "r";

$resource = fopen($filename, $mode);

    $return = get_resource_id($resource);

    echo $return;

fclose($resource);

?>
3

2 · cast

<?

$filename = $_SERVER["DOCUMENT_ROOT"] . "/assets/txt/1.txt";
$mode = "r";

$resource = fopen($filename, $mode);

    echo (int)$resource;

fclose($resource);

?>
3
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