Difference Between Bind and Singleton

bind vs singleton

bind

for reusable class or object

singleton

need only one instance through your application call

example

<?php
class TestClass
{
    protected $value = 0;

    public function increase()
    {
        $this->value++;

    return $this->value;
    }
}
###
$app->bind('klass1', TestClass::class);
$app->singleton('klass2', TestClass::class);
###
app('klass1')->increase(); // 1
app('klass1')->increase(); // 1
app('klass1')->increase(); // 1
---
app('klass2')->increase(); // 1
app('klass2')->increase(); // 2
app('klass2')->increase(); // 3

extra information

Facade makes you easily use your service with singleton because of resolveFacadeInstance, if you want to use it with bind you can call clearResolvedInstance in your facade.

example

<?php
protected static function getFacadeAccessor()
{
    self::clearResolvedInstance(YourService::class);

    return YourService::class;
}

發佈時間 2020-3-12

#Laravel