[英]cURL WRITEFUNCTION not Being Called
当我运行以下函数时,它将按预期方式检索HTML,但是WRITEFUNCTION回调没有任何迹象。 什么也没有得到回应,变量$ this-> test_output保持不变。
function get_headers($urls){
$curly = array();
$result = array();
$mh = curl_multi_init();
$obj = $this;
$test = function ($ch, $str) use ($obj){
echo '<p class="red">--Hello World--</p>';
$obj->test_output = 'Hello World';
return strlen($str);
};
foreach ($urls as $key => $url) {
$curly[$key] = curl_init();
curl_setopt($curly[$key], CURLOPT_URL, $url);
curl_setopt($curly[$key], CURLOPT_HEADER, 0);
if (is_callable($test)){
curl_setopt($curly[$key], CURLOPT_WRITEFUNCTION, $test);
} else {
echo '<p class="red">--FUNCTION NOT VALID--</p>';
}
curl_setopt($curly[$key], CURLOPT_RETURNTRANSFER, 1);
curl_multi_add_handle($mh, $curly[$key]);
}
$running = null;
do {
curl_multi_exec($mh, $running);
} while($running > 0);
foreach($curly as $key => $cnt) {
$content = curl_multi_getcontent($cnt);
curl_multi_remove_handle($mh, $cnt);
if (strlen($content) > 0){
$result[$key] = $content;
} else {
curl_multi_close($mh);
return FALSE;
}
}
curl_multi_close($mh);
echo "<pre class='red'>";
print_r($this->test_output);
echo "</pre>";
return $result;
}
看起来cURL有点问题。 我写了一个简单的函数,发现只有在指定最后一个选项时才调用WRITEFUNCTION。 当我将该行放在其他任何选项之前时,它只是被忽略了:
function get_html(){
$url = 'http://www.example.com';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $str){return -1;});
$result = curl_exec($ch);
curl_close($ch);
return $result;
}
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