php error_reporting()은 오류 보고 수준을 설정합니다.

* For now, avoid warnings of E_STRICT mode
* (this must be done before function definitions)
*/
if (defined(’E_STRICT’)) {
    $old_error_reporting = error_reporting(0);
    if ($old_error_reporting & E_STRICT) {
        error_reporting($old_error_reporting ^ E_STRICT);
    } else {
        error_reporting($old_error_reporting);
    }
    unset($old_error_reporting);

常见的如下：

// Turn off all error reporting;关闭所有的错误
error_reporting(0);
// Report simple running errors;报告一个简单的运行错误
error_reporting(E_ERROR | E_WARNING | E_PARSE);
// Reporting E_NOTICE can be good too (to report uninitialized
// variables or catch variable name misspellings …);包括报告一些未初始化的变量或捕捉变量名的拼写错误
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;报告所有的错误但不包括E_NOTICE
error_reporting(E_ALL ^ E_NOTICE);
// Report all PHP errors (bitwise 63 may be used in PHP 3);报告所有的错误
error_reporting(E_ALL);
// Same as error_reporting(E_ALL);同上
ini_set(’error_reporting’, E_ALL);