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PHP脚本不报错的两点原因

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Release: 2016-06-13 09:33:58
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PHP程序错误一般有三种:语法错误,运行时错误,逻辑错误。

那么如果PHP脚本不报语法错,会是什么原因呢:

------------------------@author chenwei ---------------------------

1. 一般的集成环境,默认会开启错误报告; 但在linux系统中,使用软件包安装的就不一定了,

  此时可以查看PHP配置文件,打开错误报告 =>

  display_errors = On      /* PHP配置文件路径:/uer/local/php/etc/php.ini  */

 

  注:PHP脚本中动态设置php.ini配置文件的方法 =>

  ini_set('display_errors', 'On'); /* 显示所有错误 */

 

2. 设置错误报告级别 =>

  error_reporting = E_ALL;   /* 最严格的错误报告级别, 开发阶段可开启 */

  error_reporting = E_ALL &~ E_NOTICE /* 除了notice以外的错误 */

  error_reporting = E_ERROR | E_PARSE | e_CORE_ERROR /* 只考虑致命的运行时错误,新解析错误 和 核心错误 */

  以上三种,推荐中间的。

 

  注:PHP脚本中动态设置error_reporting错误报告级别的方法 =>

  error_reporting(E_ALL &~ E_NOTICE);

 

3. 更改配置文件以后,需要重启服务才能生效 =>

  Apache的启动:/usr/local/apache2/bin/apachectl start  /* 推荐 */

     另, 红帽linux专有启动命令:service httpd start

  Apache的重启:/usr/local/apache2/bin/apachectl restart

     另,红帽专有启动命令:service httpd restart

  Apache的停止:/usr/local/apache2/bin/apachectl stop

     另,红帽专有启动命令:service httpd stop

  Nginx的重启:/usr/local/nginx/sbin/nginx -s reload   /* 平滑重启 */

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