Due to Recent changes.
* [PHP-554] - MongoId should not get constructed when passing in an invalid ID.
Constructor will throw an exception when passing invalid ID.
<?php
$_id = new MongoId(); //Generates new ID
$_id = new MongoId(null); //Generates new ID
$_id = new MongoId("invalid id"); //throws MongoException
?>
<?php
//Revert to old behaviour
$_id = "invalid id";
try {
$_id = new MongoId($_id);
} catch (MongoException $ex) {
$_id = new MongoId();
}
?>
<?php
//Nifty hack
class SafeMongoId extends MongoId {
public function __construct($id=null) {
try {
parent::__construct($id);
} catch (MongoException $ex) {
parent::__construct(null);
}
}
}
?>
MongoId::__construct
(PECL mongo >= 0.8.0)
MongoId::__construct — Creates a new id
This extension that defines this method is deprecated. Instead, the MongoDB extension should be used. Alternatives to this method include:
Beschreibung
public MongoId::__construct
([ string|MongoId
$id = NULL
] )Rückgabewerte
Returns a new id.
Changelog
| Version | Beschreibung |
|---|---|
| 1.4.0 | An exception is thrown when passed invalid string |
Beispiele
Beispiel #1 MongoId::__construct() example
This example shows how to create a new id. This is seldom necessary, as the driver adds an id to arrays automatically before storing them in the database.
<?php
$id1 = new MongoId();
echo "$id1\n";
$id2 = new MongoId();
echo "$id2\n";
?>
Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
49a7011a05c677b9a916612a 49a702d5450046d3d515d10d
Beispiel #2 Parameter example
This example shows how to use a string parameter to initialize a MongoId with a given value.
<?php
$id1 = new MongoId();
// create a new id from $id1
$id2 = new MongoId("$id1");
// show that $id1 and $id2 have the same hexidecimal value
var_dump($id1 == $id2);
?>
Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
bool(true)
Siehe auch
- MongoId::__toString() - Returns a hexidecimal representation of this id
- MongoId::isvalid() - Check if a value is a valid ObjectId
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georgedot nospam gmail guess what com ¶
11 years ago
