如果你使用file_get_contents获取远程文件内容返回为空或提示该函数不可用,也许本文能帮到你！
使用file_get_contents和fopen必须空间开启allow_url_fopen。方法：编辑php.ini，设置allow_url_fopen = On，allow_url_fopen关闭时fopen和file_get_contents都不能打开远程文件。如果你使用的是虚拟主机可以考虑用curl函数来代替。
curl函数的使用示例:
复制代码 代码如下:
$ch = curl_init();
$timeout = 5;
curl_setopt ($ch, CURLOPT_URL, ‘http://www.jb51.net');
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);
复制代码 代码如下:
if (function_exists(‘file_get_contents')) {
$file_contents = @file_get_contents($url);
}else{
$ch = curl_init();
$timeout = 30;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);
}
复制代码 代码如下:
if (function_exists(‘file_get_contents')) {//判断是否支持file_get_contents
$file_contents = @file_get_contents($url);
}
if ($file_contents == ”) {//判断$file_contents是否为空
$ch = curl_init();
$timeout = 30;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);
}
复制代码 代码如下:
function file_get_content($url) {
if (function_exists(‘file_get_contents')) {
$file_contents = @file_get_contents($url);
}
if ($file_contents == ”) {
$ch = curl_init();
$timeout = 30;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);
}
return $file_contents;
}
