get_debug_type
Description
The get_debug_type of Variable Handling for PHP gets the type name of a variable in a way that is suitable for debugging.
Syntax
get_debug_type(mixed $value): string
Parameters
value
The variable being type checked.
Return
Possible values for the returned string are:
| Type + State | Return | Notes |
|---|---|---|
| null | "null" | |
| Booleans (true or false) | "bool" | |
| Integers | "int" | |
| Floats | "float" | |
| Strings | "string" | |
| Arrays | "array" | |
| Resources | "resource (resourcename)" | |
| Resources (Closed) | "resource (closed)" | A file stream after being closed with fclose |
| Objects from Named Classes | The full name of the class including its namespace | |
| Objects from Anonymous Classes | "class@anonymous" | Anonymous classes are those created through the $x = new class { ... } syntax |
Examples
1
<?
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("string") . 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;
?>null bool int float string array resource (stream) resource (closed) stdClass class@anonymous
Links
Variable Handling
- boolval
- debug_zval_dump
- doubleval
- empty
- floatval
- get_defined_vars
- get_resource_id
- get_resource_type
- gettype
- intval
- is_array
- is_bool
- is_callable
- is_countable
- is_double
- is_float
- is_int
- is_integer
- is_iterable
- is_long
- is_null
- is_numeric
- is_object
- is_real
- is_resource
- is_scalar
- is_string
- isset
- print_r
- serialize
- settype
- strval
- unserialize
- unset
- var_dump
- var_export
