get_debug_type

(PHP 8)

get_debug_type — Gets the type name of a variable in a way that is suitable for debugging

Descrizione

get_debug_type(mixed $value): string

Returns the resolved name of the PHP variable value. This function will resolve objects to their class name, resources to their resource type name, and scalar values to their common name as would be used in type declarations.

This function differs from gettype() in that it returns type names that are more consistent with actual usage, rather than those present for historical reasons.

Elenco dei parametri

value: The variable being type checked.

Valori restituiti

Possible values for the returned string are:

Type + State	Return Value	Notes
null	`"null"`	-
Booleans (true or false)	`"bool"`	-
Integers	`"int"`	-
Floats	`"float"`	-
Strings	`"string"`	-
Arrays	`"array"`	-
Resources	`"resource (resourcename)"`	-
Resources (Closed)	`"resource (closed)"`	Example: A file stream after being closed with fclose.
Objects from Named Classes	The full name of the class including its namespace e.g. `Foo\Bar`	-
Objects from Anonymous Classes	`"class@anonymous"`	Anonymous classes are those created through the $x = new class { ... } syntax

Esempi

Example #1 get_debug_type() example

<?php
echo get_debug_type(null) . PHP_EOL;
echo get_debug_type(true) . PHP_EOL;
echo get_debug_type(1) . PHP_EOL;
echo get_debug_type(0.1) . PHP_EOL;
echo get_debug_type("foo") . PHP_EOL;
echo get_debug_type([]) . PHP_EOL;

$fp = fopen(__FILE__, 'rb');
echo get_debug_type($fp) . PHP_EOL;

fclose($fp);
echo get_debug_type($fp) . PHP_EOL;

echo get_debug_type(new stdClass) . PHP_EOL;
echo get_debug_type(new class {}) . PHP_EOL;
?>

Il precedente esempio visualizzerà qualcosa simile a:

null
bool
int
float
string
array
resource (stream)
resource (closed)
stdClass
class@anonymous

Vedere anche:

gettype() - Resituisce il tipo di una variabile
get_class() - Restituisce il nome della classe di un oggetto

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