求怎样解决fsockopen函数,错误
<?//获取文件大小function remote_filesize($url_file){ if (!remote_file_exists($url_file)) return false; $headInf = get_headers($url_file,1); return $headInf['Content-Length'];}//判断文件是否存在function remote_file_exists($url_file){ $url_file = trim($url_file); if (empty($url_file)) return false; $url_arr = parse_url($url_file); if (!is_array($url_arr) || empty($url_arr)) return false; $host = $url_arr['host']; $path = $url_arr['path'] ."?".@$url_arr['query']; $port = isset($url_arr['port']) ?$url_arr['port'] : "80"; $fp = fsockopen($host, $port, $err_no, $err_str,30); if (!$fp) return false; $request_str = "GET ".$path." HTTP/1.1\r\n"; $request_str .= "Host:".$host."\r\n"; $request_str .= "Connection:Close\r\n\r\n"; fwrite($fp,$request_str); //fread replace fgets $first_header = fread($fp, 128); fclose($fp); if (trim($first_header) == "") return false; //check $url_file "Content-Location" if (!preg_match("/200/", $first_header) || preg_match("/Location:/", $first_header)) return false; return true;}echo remote_filesize("http://wlm212.bjphp1.qq1.cc/down/ee.exe");?>
这个是我在网上找的,取远程文件大小的例子。
如果域名正常,文件存在就返回文件大小,
如果域名正常,文件不存在,就返回false。
现在问题出现了,如果域名不正常,就像上面这个地址,域名解析不了,也就是无法访问。这个时候会输出错误信息。
php_network_getaddresses: getaddrinfo failed: 不知道这样的主机。 in D:\PHPnow-1.5.6\htdocs\webadmin\inc\filesize.php on line 15
怎样能把这个错误信息去掉呢,在不修改web服务器配置的情况下,只在代码里面解决。
因为我要用ajax,取文件大小信息。所以不能报错,一报错,javascript获取的返回值,就是错误信息了,这个就导致前台无法运行了。
有会的吗,指点一下小弟。
回复讨论(解决方案)
try
{
$fp = fsockopen($host, $port, $err_no, $err_str,30);
}catch(Exception $e)
{
}
加了个异常处理,还是不管用。
$fp = @fsockopen($host, $port, $err_no, $err_str,30);
屏蔽掉错误信息(这个函数在异常处理之前出生)

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Decrypting HTTP status code 460: Why does this error occur? Introduction: In daily network use, we often encounter various error prompts, including HTTP status codes. These status codes are a mechanism defined by the HTTP protocol to indicate the processing of a request. Among these status codes, there is a relatively rare error code, namely 460. This article will delve into this error code and explain why this error occurs. Definition of HTTP status code 460: First, we need to understand the basics of HTTP status code

If you encounter an error message when using your printer, such as the operation could not be completed (error 0x00000771), it may be because the printer has been disconnected. In this case, you can solve the problem through the following methods. In this article, we will discuss how to fix this issue on Windows 11/10 PC. The entire error message says: The operation could not be completed (error 0x0000771). The specified printer has been deleted. Fix 0x00000771 Printer Error on Windows PC To fix Printer Error the operation could not be completed (Error 0x0000771), the specified printer has been deleted on Windows 11/10 PC, follow this solution: Restart Print Spool

Does Windows Sandbox terminate with Windows Sandbox Unable to Start, Error 0x80070005, Access Denied message? Some users reported that Windows Sandbox cannot be opened. If you also encounter this error, you can follow this guide to fix it. Windows Sandbox failed to start - Access Denied If Windows Sandbox terminates with Windows Sandbox Unable to Start, Error 0x80070005, Access Denied message, make sure you are logged in as an administrator. This type of error is usually caused by insufficient permissions. So try logging in as an administrator and see if that resolves the issue. If the problem persists, you can try the following solutions: Run the Wi-Fi as administrator

When many friends turn on the computer to connect to the broadband, the computer prompts error 651. What is the situation? The occurrence of 651 is caused by the failure of the connection between the user's terminal computer and the China Netcom central office equipment. It may be an external disconnection or a problem with the equipment. , we can contact the operator to solve it, or check the device. Let’s take a look at the specific tutorial. Detailed tutorial method to solve computer broadband connection 651 error 1: Network card driver failure 1. First consider the network card driver problem. This problem is relatively common. Right-click the desktop computer - Manage, as shown in the figure below 2. Select "Device Management" on the computer properties page device" to enter. 3. On the Device Manager page, find "Network Adapter". There are usually two network cards, one wired and one wireless. Click Wired.

Table of Contents Solution 1 Solution 21. Delete the temporary files of Windows update 2. Repair damaged system files 3. View and modify registry entries 4. Turn off the network card IPv6 5. Run the WindowsUpdateTroubleshooter tool to repair 6. Turn off the firewall and other related anti-virus software. 7. Close the WidowsUpdate service. Solution 3 Solution 4 "0x8024401c" error occurs during Windows update on Huawei computers Symptom Problem Cause Solution Still not solved? Recently, the web server needs to be updated due to system vulnerabilities. After logging in to the server, the update prompts error code 0x8024401c. Solution 1

AutoCAD is one of the most commonly used drawing design software, but when we want to use it on win11, we may encounter an error when installing autocad on win11. At this time, we can try to modify the registry to solve it. An error occurred when installing autocad in win11: First step, press "win logo + r" on the keyboard to open the run. In the second step, enter "regedit" and press Enter to open the registry. 3. Paste "Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" into the path above. 4. After entering, double-click

Practical Tips to Quickly Solve Tomcat404 Errors Tomcat is a commonly used JavaWeb application server and is often used when developing and deploying JavaWeb applications. However, sometimes we may encounter a 404 error from Tomcat, which means that Tomcat cannot find the requested resource. This error can be caused by multiple factors, but in this article, we will cover some common solutions and tips to help you resolve Tomcat 404 errors quickly. Check URL path

If you encounter error code 0x80070003 when using Hyper-V to create or start a virtual machine, it may be caused by permission issues, file corruption, or configuration errors. Solutions include checking file permissions, repairing damaged files, ensuring correct configuration, and more. This problem can be solved by ruling out the different possibilities one by one. The entire error message looks like this: The server encountered an error while creating [virtual machine name]. Unable to create new virtual machine. Unable to access configuration store: The system cannot find the path specified. (0x80070003). Some possible causes of this error include: The virtual machine file is corrupted. This can happen due to malware, virus or adware attacks. Although the likelihood of this happening is low, you can't completely
