Here is something that had me stumped with regards to gettype and is_object.
Gettype will report an incomplete object as such, whereas is_object will return FALSE.
<?php
if (!is_object($incomplete_obj)) {
echo 'This variable is not an object, it is a/an ' . gettype($incomplete_obj);
}
?>
Will print:
This variable is not an object, it is a/an object
gettype
(PHP 4, PHP 5)
gettype — Get the type of a variable
說明
Returns the type of the PHP variable var. For
type checking, use is_* functions.
參數
-
var -
The variable being type checked.
回傳值
Possible values for the returned string are:
範例
Example #1 gettype() example
<?php
$data = array(1, 1., NULL, new stdClass, 'foo');
foreach ($data as $value) {
echo gettype($value), "\n";
}
?>
上例的輸出類似於：
integer double NULL object string
參見
- settype() - Set the type of a variable
- get_class() - Returns the name of the class of an object
- is_array() - Finds whether a variable is an array
- is_bool() - Finds out whether a variable is a boolean
- is_callable() - Verify that the contents of a variable can be called as a function
- is_float() - Finds whether the type of a variable is float
- is_int() - Find whether the type of a variable is integer
- is_null() - Finds whether a variable is NULL
- is_numeric() - Finds whether a variable is a number or a numeric string
- is_object() - Finds whether a variable is an object
- is_resource() - Finds whether a variable is a resource
- is_scalar() - Finds whether a variable is a scalar
- is_string() - Find whether the type of a variable is string
- function_exists() - Return TRUE if the given function has been defined
- method_exists() - Checks if the class method exists
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User Contributed Notes 1 note
matt at appstate ¶
19 years ago
