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POunderstanding pimple php source code
 

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  1. POunderstanding pimple php source code
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    <p>Pimple is a simple dependency injection container in php used in silex framework. I was going through the source code <a href="https://github.com/fabpot/Pimple/blob/master/lib/Pimple.php" rel="nofollow" title="Pimple">here</a>. In the documentation the function <code>offsetGet</code> returns the same instance of the class that is attached to the dependency container. the relevant code for <code>offsetGet</code> is :</p> <pre><code>public function offsetGet($id) { if (!isset($this-&gt;keys[$id])) { throw new InvalidArgumentException(sprintf('Identifier "%s" is not defined.', $id)); } if ( isset($this-&gt;raw[$id]) || !is_object($this-&gt;values[$id]) || isset($this-&gt;protected[$this-&gt;values[$id]]) || !method_exists($this-&gt;values[$id], '__invoke') ) { return $this-&gt;values[$id]; } if (isset($this-&gt;factories[$this-&gt;values[$id]])) { return $this-&gt;values[$id]($this); } $this-&gt;frozen[$id] = true; $this-&gt;raw[$id] = $this-&gt;values[$id]; return $this-&gt;values[$id] = $this-&gt;values[$id]($this); } </code></pre> <p>Here, if the object is in the <code>factories</code> Object Store(<code>SplObjectStorage</code> type), it returns a new instance of the class with id $id. then in the last return again <code>$this-&gt;values[$id]</code> is set to a new instance of the object and that new instance is returned.</p> <p><code>return $this-&gt;values[$id] = $this-&gt;values[$id]($this)</code>. </p> <p>This is the line I fail to understand. How is this line supposed to return the same instance for different calls of <code>offsetGet</code> for the same $id. Won't it return a new instance every time? Please help me. I tried a lot but I don't get it. </p>
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    1. USShikhar Subedi
    1. USShikhar Subedi
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    1. CO`$this` just inject the object, which is instantiated before, not while returning
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      1. POunderstanding pimple php source code
      1. USRoyal Bg
    2. COi understand that $this is passed because the anonymous function requires the object of the container. this anonymous function returns a new instance of the class.
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      1. POunderstanding pimple php source code
      1. USShikhar Subedi
    3. COso aren't then instances related to the id's - tbh I haven't used this lib
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      1. POunderstanding pimple php source code
      1. USRoyal Bg
 

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