PHP warn、notice 问题的解决方案

本文介绍了五种解决PHP中未定义变量警告的方法,包括修改服务器配置、变量初始化、禁用错误报告等。

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首先,这个不是错误,是warning。所以如果服务器不能改,每个变量使用前应当先定义。

方法1:服务器配置修改
修改php.ini配置文件,error_reporting = E_ALL & ~E_NOTICE

方法2:对变量进行初始化,规范书写(比较烦琐,因为有大量的变量)。但还没有找到好定义方法,望大家指教

方法3:每个文件头部加上:error_reporting(0); 如果不行,只有打开php.ini,找到display_errors,设置为display_errors = Off。以后任何错误都不会提示。ini_set("display_errors", 0);

方法4 :做判断:

isset($_GET["page"])  
 

    if-else判断

或者加上'@'表示这行如果有错误或是警告不要輸出
如:

@$page=$_GET["page"]
 



方法5:

 

file1.php文件把$xx变量付一个值,用post传递给file2.php,
如果file2.php没有$xx的定义,而直接使用$yy=$xx; 系统就会报错:"undifined variaable $xx", 如果file2.php的文件开始用$xx="";定义,那么file1.php的$xx值就传不过来了!

 

file2.php里可以这样

if(!isset($xx)) $xx="";

[Sun Jun 29 14:55:13.531112 2025] [core:error] [pid 27208:tid 1168] [client ::1:61472] AH00124: Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace. [Sun Jun 29 14:56:16.227311 2025] [core:error] [pid 27208:tid 1148] [client ::1:61485] AH00124: Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace. [Sun Jun 29 15:04:18.703894 2025] [core:warn] [pid 35516:tid 364] AH00098: pid file C:/xampp/apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run? [Sun Jun 29 15:04:18.862470 2025] [mpm_winnt:notice] [pid 35516:tid 364] AH00455: Apache/2.4.58 (Win64) OpenSSL/3.1.3 PHP/8.2.12 configured -- resuming normal operations [Sun Jun 29 15:04:18.862470 2025] [mpm_winnt:notice] [pid 35516:tid 364] AH00456: Apache Lounge VS17 Server built: Oct 18 2023 13:03:18 [Sun Jun 29 15:04:18.862470 2025] [core:notice] [pid 35516:tid 364] AH00094: Command line: 'c:\\xampp\\apache\\bin\\httpd.exe -d C:/xampp/apache' [Sun Jun 29 15:04:18.873441 2025] [mpm_winnt:notice] [pid 35516:tid 364] AH00418: Parent: Created child process 37656 [Sun Jun 29 15:04:21.226512 2025] [mpm_winnt:notice] [pid 37656:tid 320] AH00354: Child: Starting 64 worker threads. [Sun Jun 29 15:07:19.452902 2025] [core:warn] [pid 29396:tid 396] AH00098: pid file C:/xampp/apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run? [Sun Jun 29 15:07:19.567596 2025] [mpm_winnt:notice] [pid 29396:tid 396] AH00455: Apache/2.4.58 (Win64) OpenSSL/3.1.3 PHP/8.2.12 configured -- resuming normal operations [Sun Jun 29 15:07:19.567596 2025] [mpm_winnt:notice] [pid 29396:tid 396] AH00456: Apache Lounge VS17 Server built: Oct 18 2023 13:03:18 [Sun Jun 29 15:07:19.567596 2025] [core:notice] [pid 29396:tid 396] AH00094: Command line: 'c:\\xampp\\apache\\bin\\httpd.exe -d C:/xampp/apache' [Sun Jun 29 15:07:19.579564 2025] [mpm_winnt:notice] [pid 29396:tid 396] AH00418: Parent: Created child process 37736 [Sun Jun 29 15:07:21.852612 2025] [mpm_winnt:notice] [pid 37736:tid 332] AH00354: Child: Starting 64 worker threads. [Sun Jun 29 15:07:32.462402 2025] [core:error] [pid 37736:tid 1180] [client ::1:61597] AH00126: Invalid URI in request 'index.php' 'GET /web/UserLogin/accountLogin HTTP/1.1' [Sun Jun 29 15:07:50.674094 2025] [core:error] [pid 37736:tid 1176] [client ::1:61598] AH00126: Invalid URI in request 'index.php' 'GET /web/UserLogin/accountLogin HTTP/1.1' [Sun Jun 29 15:08:28.424576 2025] [core:warn] [pid 25176:tid 336] AH00098: pid file C:/xampp/apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run? [Sun Jun 29 15:08:28.539271 2025] [mpm_winnt:notice] [pid 25176:tid 336] AH00455: Apache/2.4.58 (Win64) OpenSSL/3.1.3 PHP/8.2.12 configured -- resuming normal operations [Sun Jun 29 15:08:28.539271 2025] [mpm_winnt:notice] [pid 25176:tid 336] AH00456: Apache Lounge VS17 Server built: Oct 18 2023 13:03:18 [Sun Jun 29 15:08:28.539271 2025] [core:notice] [pid 25176:tid 336] AH00094: Command line: 'c:\\xampp\\apache\\bin\\httpd.exe -d C:/xampp/apache' [Sun Jun 29 15:08:28.574179 2025] [mpm_winnt:notice] [pid 25176:tid 336] AH00418: Parent: Created child process 12320 [Sun Jun 29 15:08:30.762870 2025] [mpm_winnt:notice] [pid 12320:tid 352] AH00354: Child: Starting 64 worker threads. [Sun Jun 29 15:09:23.908308 2025] [core:error] [pid 12320:tid 1184] [client ::1:61618] AH00126: Invalid URI in request 'index.php' 'GET /web/Index/thinkPHP8 HTTP/1.1'
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06-30
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