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本文翻译自:How can I handle the warning of file_get_contents() function in PHP?
I wrote a PHP code like this 我写了这样的PHP代码
$site="http://www.google.com";
$content = file_get_content($site);
echo $content;
But when I remove "http://" from $site I get the following warning: 但是,当我从$site删除“ http://”时,出现以下警告:
Warning: file_get_contents(www.google.com) [function.file-get-contents]: failed to open stream: 警告:file_get_contents(www.google.com)[function.file-get-contents]:无法打开流:
I tried try and catch but it didn't work. 我想try和catch ,但没有奏效。
#1楼
参考:https://stackoom.com/question/18qv/如何处理PHP中的file-get-contents-函数警告
#2楼
My favourite way to do this is fairly simple: 我最喜欢的方法很简单:
if (!$data = file_get_contents("http://www.google.com")) {
$error = error_get_last();
echo "HTTP request failed. Error was: " . $error['message'];
} else {
echo "Everything went better than expected";
}
I found this after experimenting with the try/catch from @enobrev above, but this allows for less lengthy (and IMO, more readable) code. 我在try/catch上述@enobrev的try/catch之后发现了这一点,但这可以减少冗长的代码(以及IMO,更易读)。 We simply use error_get_last to get the text of the last error, and file_get_contents returns false on failure, so a simple "if" can catch that. 我们仅使用error_get_last来获取上一个错误的文本,而file_get_contents在失败时返回false,因此可以使用简单的“ if”来捕获错误。
#3楼
Here's how I handle that: 这是我的处理方式:
$this->response_body = @file_get_contents($this->url, false, $context);
if ($this->response_body === false) {
$error = error_get_last();
$error = explode(': ', $error['message']);
$error = trim($error[2]) . PHP_EOL;
fprintf(STDERR, 'Error: '. $error);
die();
}
#4楼
function custom_file_get_contents($url) {
return file_get_contents(
$url,
false,
stream_context_create(
array(
'http' => array(
'ignore_errors' => true
)
)
)
);
}
$content=FALSE;
if($content=custom_file_get_contents($url)) {
//play with the result
} else {
//handle the error
}
#5楼
Since PHP 4 use error_reporting() : 由于PHP 4使用error_reporting() :
$site="http://www.google.com";
$old_error_reporting = error_reporting(E_ALL ^ E_WARNING);
$content = file_get_content($site);
error_reporting($old_error_reporting);
if ($content === FALSE) {
echo "Error getting '$site'";
} else {
echo $content;
}
#6楼
You can prepend an @: $content = @file_get_contents($site); 您可以在@前面加上: $content = @file_get_contents($site);
This will supress any warning - use sparingly! 这将禁止任何警告- 谨慎使用! . 。 See Error Control Operators 请参阅错误控制运算符
Edit: When you remove the 'http://' you're no longer looking for a web page, but a file on your disk called "www.google....." 编辑:当您删除“ http://”时,您不再在寻找网页,而是在磁盘上名为“ www.google .....”的文件。 |