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    <p><strong>Edit:</strong> To obtain the decimal value at the beginning of a string, you can use <code>sscanf</code>:</p> <pre><code>$url = '87262-any-thing-here.html'; list($realid) = sscanf($url, '%d'); </code></pre> <p>In case the URL has no decimal number at the beginning, <code>$realid</code> will be <code>NULL</code>. With <code>explode</code> you will get an undefined result depending on URL.</p> <hr> <p><a href="http://php.net/array_shift" rel="nofollow noreferrer"><code>array_shift</code><sup><em>&shy;Docs</em></sup></a> by it's function reference needs a variable:</p> <hr> <p><img src="https://i.stack.imgur.com/MfVG5.png" alt="enter image description here"></p> <hr> <p>(see as well: <a href="http://de.php.net/manual/en/language.references.pass.php" rel="nofollow noreferrer"><em>Passing by Reference</em></a>)</p> <p>But you give it a function:</p> <pre><code> $realid = array_shift(explode("-", $id)); </code></pre> <p>I would not expect it to always properly work because of that. Additionally this can trigger warnings and errors on some installations.</p> <p>Instead use a variable:</p> <pre><code> $ids = explode("-", $id); $realid = array_shift($ids); unset($ids); </code></pre> <p>Or in your case:</p> <pre><code> list($realid) = explode("-", $id); </code></pre> <p>which will assing the first element of the array returned by <code>explode</code> to <code>$realid</code>. See <a href="http://php.net/list" rel="nofollow noreferrer"><code>list</code><sup><em>&shy;Docs</em></sup></a>.</p>
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    1. PODoes array_shift and explode work?
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    1. UShakre
    1. UShakre
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    1. COWhat are you talking about? `array_shift(explode("-", $id));` works fine (I think it throws a E_STRICT warning in PHP 5.3 though).
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      1. USRocket Hazmat
    2. COphp will simply evaluate the explode() before passing it as an argument. and explode returns an array so it is fine.
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      1. USDavid Chan
    3. CO@Rocket: Works does not mean is. PHP versions differ and so do error logging configurations, e.g. `Strict Standards: Only variables should be passed by reference` - I would stick to the documentation of the function at first.
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