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<?php function foo() { $reqs = array('11', '22', array('id' => 123, 'name' => 'ffff')); foreach ($reqs as &$req) { if (is_array($req)) { $req['name'] = 'dd'; //alter value } } echo '<pre>'; print_r($reqs); //values changed, ok echo '</pre>'; foreach ($reqs as $req) { echo '<pre>'; print_r($req); //the last value is '22', that is wrong. echo '</pre>'; } } foo();
Output for git.master, git.master_jit, rfc.property-hooks
<pre>Array ( [0] => 11 [1] => 22 [2] => Array ( [id] => 123 [name] => dd ) ) </pre><pre>11</pre><pre>22</pre><pre>22</pre>

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