error_reporting (PHP 3, PHP 4, PHP 5)error_reporting -- Sets which PHP errors are reported 说明 int error_reporting ( [int level] ) The error_reporting() function sets the error_reporting directive at runtime. PHP has many levels of errors, using this function sets that level for the duration (runtime) of your script. 参数 level The new error_reporting level. It takes on either a bitmask, or named constants. Using named constants is strongly encouraged to ensure compatibility for future versions. As error levels are added, the range of integers increases, so older integer-based error levels will not always behave as expected. The available error level constants are listed below. The actual meanings of these error levels are described in the predefined constants. 表格 1. error_reporting() level constants and bit valuesvalue constant 1 E_ERROR 2 E_WARNING 4 E_PARSE 8 E_NOTICE 16 E_CORE_ERROR 32 E_CORE_WARNING 64 E_COMPILE_ERROR 128 E_COMPILE_WARNING 256 E_USER_ERROR 512 E_USER_WARNING 1024 E_USER_NOTICE 2047 E_ALL 2048 E_STRICT 返回值 Returns the old error_reporting level. 范例 例子 1. error_reporting() examples<?php// Turn off all error reporting error_reporting(0);// Report simple running errors error_reporting(E_ERROR | E_WARNING | E_PARSE);// Reporting E_NOTICE can be good too (to report uninitialized // variables or catch variable name misspellings ...) error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);// Report all errors except E_NOTICE // This is the default value set in php.ini error_reporting(E_ALL ^ E_NOTICE);// Report all PHP errors (bitwise 63 may be used in PHP 3) error_reporting(E_ALL);// Same as error_reporting(E_ALL); ini_set('error_reporting', E_ALL);
(PHP 3, PHP 4, PHP 5)error_reporting -- Sets which PHP errors are reported
说明
int error_reporting ( [int level] )
The error_reporting() function sets the error_reporting directive at runtime. PHP has many levels of errors, using this function sets that level for the duration (runtime) of your script. 参数
level
The new error_reporting level. It takes on either a bitmask, or named constants. Using named constants is strongly encouraged to ensure compatibility for future versions. As error levels are added, the range of integers increases, so older integer-based error levels will not always behave as expected. The available error level constants are listed below. The actual meanings of these error levels are described in the predefined constants. 表格 1. error_reporting() level constants and bit valuesvalue constant
1 E_ERROR
2 E_WARNING
4 E_PARSE
8 E_NOTICE
16 E_CORE_ERROR
32 E_CORE_WARNING
64 E_COMPILE_ERROR
128 E_COMPILE_WARNING
256 E_USER_ERROR
512 E_USER_WARNING
1024 E_USER_NOTICE
2047 E_ALL
2048 E_STRICT 返回值
Returns the old error_reporting level. 范例
例子 1. error_reporting() examples<?php// Turn off all error reporting
error_reporting(0);// Report simple running errors
error_reporting(E_ERROR | E_WARNING | E_PARSE);// Reporting E_NOTICE can be good too (to report uninitialized
// variables or catch variable name misspellings ...)
error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);// Report all errors except E_NOTICE
// This is the default value set in php.ini
error_reporting(E_ALL ^ E_NOTICE);// Report all PHP errors (bitwise 63 may be used in PHP 3)
error_reporting(E_ALL);// Same as error_reporting(E_ALL);
ini_set('error_reporting', E_ALL);
error_reporting(0) 代表什么？//代表不显示错误
if($a=1) {
但是这段代码执行后还是显示语法错误。不是不显示了吗？还有ini_set("display_errors","off");设了这个也没用