How PHP error log records file location

Methods for the location of PHP error log files: 1. Through module loading, the code is [Configuration in php program>httpd.conf>Configuration in php.ini]; 2. Through [CGI/ fastCGI] mode, the code is [ini_get("error_log")].

How to locate the PHP error log file:

1. Determine the web server (IIS, APACHE, NGINX etc.) In which way to support PHP, there are usually the following two ways

2. Through module loading

php程序中配置 > httpd.conf > php.ini中配置

3. Through CGI /fastCGI mode

php程序中配置 > php.ini中配置　　　　
ini_get("error_reporting");
ini_get("log_errors");
ini_get("error_log");

Output:

'22527'
'1'
'/usr/local/php7.2.0/var/log/php_errors.log'
如果log_errors = On

/usr/local/php7.2.0/var/log/php_errors.logThe file does not exist or cannot be created, write Enter, the php error log is written to the file specified by the apache ErrorLog directive

[liuchao@GD-NT-0911QAR1CF_vm1-19.32 conf.d]$ sudo ps -ef |grep httpd
apache     670  2501  0 11:24 ?        00:00:00 /usr/local/httpd-2.4.20/bin/httpd -k graceful
[liuchao@GD-NT-0911QAR1CF_vm1-19.32 conf.d]$ cd /usr/local/httpd-2.4.20/conf/conf.d
[liuchao@GD-NT-0911QAR1CF_vm1-19.32 conf.d]$ sudo grep -anR --color '1.aspire-he-admin' ./
./aspire_he_admin.conf:29:    ServerName 1.aspire-he-admin
[liuchao@GD-NT-0911QAR1CF_vm1-19.32 conf.d]$ sudo vim +29 /usr/local/httpd-2.4.20/conf/conf.d/aspire_he_admin.conf

<VirtualHost *:80>
    DocumentRoot "/home/d139/var/aspire-he-admin/webroot/"
    ServerName 1.aspire-he-admin
    SetEnv SERVER_ENVERONMENT_PARAM 2
    DirectoryIndex index.php index.html
    php_value post_max_size 100M
    CustomLog "| /usr/sbin/cronolog /home/d139/logs/%Y-%m-%d-%H-he-admin_access.log" combined
    ErrorLog  "| /usr/sbin/cronolog /home/d139/logs/%Y-%m-%d-%H-he-admin_error.log"
</VirtualHost>

[liuchao@GD-NT-0911QAR1CF_vm1-19.32 module]$ sudo tail -f /home/d139/logs/2019-03-13-10-he-admin_error.log
[Wed Mar 13 10:02:01.194757 2019] [php7:error] [pid 17673] [client 127.0.0.1:50312] 
PHP Fatal error:  Uncaught Error: Call to undefined method VersionManage::
getDb1() in /home/d139/var/aspire-he-admin/module/VersionManage.class.php:82\nStack trace:\n#0 /home/d139/var/aspire-he-admin/webroot/api.php(37): 
VersionManage::getTxlVersionUpgradeStatus(Array)\n#1 {main}\n  thrown in /home/d139/var/aspire-he-admin/module/VersionManage.class.php on line 82

If log_errors= On in php.ini, according to the official statement, then error_log## must be specified #File, if it is not specified or the specified file does not have permission to write, it will still be output to the normal output channel, which will make display_errors the specified Off invalid, and the error message will still be printed. Just set log_errors = Off.

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