PHP – CURL已启用但无法正常工作

但是,我的代码不起作用.

<?php
if (! function_exists ( 'curl_version' )) {
    exit ( "Enable cURL in PHP" );
}

$ch = curl_init ();
$timeout = 0; // 100; // set to zero for no timeout
$myHITurl = "http://www.google.com";
curl_setopt ( $ch,CURLOPT_URL,$myHITurl );
curl_setopt ( $ch,CURLOPT_HEADER,0 );
curl_setopt ( $ch,CURLOPT_RETURNTRANSFER,1 );
curl_setopt ( $ch,CURLOPT_CONNECTTIMEOUT,$timeout );
$file_contents = curl_exec ( $ch );
if (curl_errno ( $ch )) {
    echo curl_error ( $ch );
    curl_close ( $ch );
    exit ();
}
curl_close ( $ch );

// dump output of api if you want during test
echo "$file_contents";
?>

它超时了.