Functions#
is_resource()
#
Tip
Base function: https://www.php.net/manual/en/function.is-resource.php
<?php
function \Arokettu\IsResource\is_resource(mixed $value): bool;
The function returns true
if $value
is
a resource
an object that was a resource in earlier PHP versions
get_resource_type()
#
Tip
Base function: https://www.php.net/manual/en/function.get-resource-type.php
<?php
function \Arokettu\IsResource\get_resource_type(resource|object $resource): string;
The function returns the resource type string if $resource
is
a resource
an object that was a resource in earlier PHP versions
In other cases the behavior falls back to the default \get_resource_type()
behavior:
in PHP < 8.0: return
null
+ issueE_WARNING
in PHP >= 8.0: throw
TypeError
try_get_resource_type()
#
<?php
function \Arokettu\IsResource\try_get_resource_type(mixed $resource): string|null;
A useful shortcut to check the resource type. It returns null in case the resource was not recognized.
<?php
use function Arokettu\IsResource\try_get_resource_type;
// was:
if (is_resource($conn) && get_resource_type($conn) === 'pgsql link') {
// ...
}
// With PHP 8.1 this transforms to:
if (
is_resource($conn) && get_resource_type($conn) === 'pgsql link' ||
$conn instanceof PgSql\Connection
) {
// ...
}
// but with try_get_resource_type() from this library it's just this:
if (try_get_resource_type($conn) === 'pgsql link') {
// ...
}