PHP错误级别处理，隐藏错误信息

PHP错误级别处理，隐藏错误信息

PHP错误级别：

1.最低级别错误---Deprecated

<?php

//例

if(ereg('china','this is china',$matches)){

    print_r($matches);

}else{
    echo 'not find';

}

2.通知级别错误---Notice(抛出报错信息，程序继续向下执行)

<?php

//不存在的变量

echo $num;

3.警告级别错误---Warning

4.致命级别错误---Fatal(抛出报错信息，程序不能向下执行)

5.语法解析错误---Parse（最高级别错误，程序不能执行）

<?php

echo md5(111);

echo md6(1111);//不存在md6函数

1.显示所有错误一：

<?php

//显示所有错误
error_reporting(E_ALL&~E_NOTICE);

//不显示所有错误
error_reporting(0);

//显示错误
error_reporting(-1);


//in_set() 运行时设置配置选项的值
in_set('error_reporting',0);

in_set('error_reporting',-1);

in_set('display_errors',0);

2.PHP错误处理：

修改php.ini

;
; Error Level Constants:
; E_ALL             - All errors and warnings (includes E_STRICT as of PHP 5.4.0)
; E_ERROR           - fatal run-time errors
; E_RECOVERABLE_ERROR  - almost fatal run-time errors
; E_WARNING         - run-time warnings (non-fatal errors)
; E_PARSE           - compile-time parse errors
; E_NOTICE          - run-time notices (these are warnings which often result
;                     from a bug in your code, but it's possible that it was
;                     intentional (e.g., using an uninitialized variable and
;                     relying on the fact it's automatically initialized to an
;                     empty string)
; E_STRICT          - run-time notices, enable to have PHP suggest changes
;                     to your code which will ensure the best interoperability
;                     and forward compatibility of your code
; E_CORE_ERROR      - fatal errors that occur during PHP's initial startup
; E_CORE_WARNING    - warnings (non-fatal errors) that occur during PHP's
;                     initial startup
; E_COMPILE_ERROR   - fatal compile-time errors
; E_COMPILE_WARNING - compile-time warnings (non-fatal errors)
; E_USER_ERROR      - user-generated error message
; E_USER_WARNING    - user-generated warning message
; E_USER_NOTICE     - user-generated notice message
; E_DEPRECATED      - warn about code that will not work in future versions
;                     of PHP
; E_USER_DEPRECATED - user-generated deprecation warnings

error_reporting = E_ALL&~E_NOTICR&E_DEPRECATED&~E_STRICT

4.PHP通过trigger_error()触发PHP错误

<?php

header('content-type:text/html;charset=utf-8');

$num1 = 1;
$num2 = '3b';

//判断$num1 和$num2 是否是合法数值
if(!(is_numberic($num1)&& is_numeric($num2))){
      //trigger_error('num1 和 num2 必须为合法数值',E_USER_NOTICE);
      //trigger_error('num1 和 num2 必须为合法数值',E_USER_WARNING);

         trigger_error('num1 和 num2 必须为合法数值',E_USER_ERROR);

                      
}else{
        echo $num1 + $num2 ; 
}    

echo '程序继续向下执行！';