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copied!<p>No, this isn't possible with the built in functions of cURL. However, it would be trivial to implement a wrapper around the native functions to do what you want.</p> <p>For instance, vaguely implementing the Observer pattern:</p> <pre><code><?php class CurlWrapper { private $ch; private $listeners; public function __construct($url) { $this->ch = curl_init($url); $this->setopt(CURLOPT_RETURNTRANSFER, true); } public function setopt($opt, $value) { $this->notify('setopt', array('option' => $opt, 'value' => $value)); curl_setopt($this->ch, $opt, $value); } public function setopt_array($opts) { $this->notify('setopt_array', array('options' => $opts)); curl_setopt_array($this->ch, $opts); } public function exec() { $this->notify('beforeExec', array()); $ret = curl_exec($this->ch); $this->notify('afterExec', array('result' => $ret)); return $ret; } public function attachListener($event, $fn) { if (is_callable($fn)) { $this->listeners[$event][] = $fn; } } private function notify($event, $data) { if (isset($this->listeners[$event])) { foreach ($this->listeners[$event] as $listener) { $listener($this, $data); } } } } $c = new CurlWrapper('http://stackoverflow.com'); $c->setopt(CURLOPT_HTTPGET, true); $c->attachListener('beforeExec', function($handle, $data) { echo "before exec\n"; }); $result = $c->exec(); echo strlen($result), "\n"; </code></pre> <p>You can add event listeners (which must be callables) to the object with <code>addListener</code>, and they will automatically be called at the relevant moment.</p> <p>Obviously you would need to do some more work to this to make it fit your requirements, but it isn't a bad start, I think.</p>

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