学习动态网页技术PHP中错误处理的一些方法
已经玩php一段时间了,基本是from 0开始的,经常出现的问题也很多,慢慢的可以熟练的查询文档了,而且,经验也不是很多。
先look here。:
error_reporting(1048);//1,2,4,7,...,1048
ob_start();
session_start();
date_default_timezone_set(Asia/Shanghai);
php的递给调用会吃掉很多的内存。
一般的,不要太多的使用define。
在类的构造和属性器方面,5已经做了很多的工作,克服的bug就不说了,__系列的函数都有一些看点,也是支持static的。
按照我现在的写过的程序,很少用到框架页面的,我感觉在php里面速度不在是一个问题。
注意类的调用次序,特别是已经extends的,准确的释放掉内存。
mysql的语句,如果执行in 的话不再支持limit。so...很麻烦。
支持distinct,group之,程序循环执行,md。
$_GET= stripslashes_gpc($_GET);
$_POST= stripslashes_gpc($_POST);
$_COOKIE= stripslashes_gpc($_COOKIE);
}
set_magic_quotes_runtime(0);#magic_quotes_runtime
function stripslashes_gpc($array) {
while (list($key,$value) = each($array)) {
if (is_string($value)) {
$array[$key] = addslashes(stripslashes($value));
} else if (is_array($value)) {
$array[$key] = stripslashes_gpc($value);
}
}
return $array;
}
/**
* 处理程序中出现的错误
* @Date:2006-10-9-10:51
* @param (类型) (参数名) (描述)
*/
function Error_Handler($errno,$errstr,$errorfile,$errline,$errtext){
echo(系统发生错误:.$errstr);
echo(At.$errorfile.的第.$errline.行.);
if($errno==E_USER_ERROR){
echo(致命错误,程序已经中止);
}
}
在使用的时候:
trigger_error(call trigger_error,E_USER_ERROR);
这是使用函数获取的,当然您的错误报告级别应该高点:
为了更加oo,先看看一个描述类的自写的函数:
/**
* (功能描述)
* @Date:
* @param (类型) (参数名) (描述)
*/
function ClassDetail($classname){
if(!class_exists($classname)){
echo($classname.类不存在);
}else{
print_r("以下描述类".$classname);
print_r("所有的方法
");<br> print_r(get_class_methods($classname));<br> print_r("
print_r("
所有的属性
");<br> print_r(get_class_vars($classname));<br> print_r("
");
}
}
ClassDetail($classname);
发现exception类的所有get方法是:
[0] => __construct
[1] => getMessage
[2] => getCode
[3] => getFile
[4] => getLine
[5] => getTrace
[6] => getTraceAsString
[7] => __toString
慢慢的优化个性点,也可以的。
ok,来看比较oo的处理方式:
private $_context = null;
function __construct($level, $string, $file, $line, $context=null){
parent::__construct($string,$level);
$this->file = $file;
$this->line = $line;
$this->_level = $level;
$this->_context = $context;
}
function __destruct(){
// parent::__destruct();
}
function Message(){
$errors = array(
E_ERROR => error,
E_WARNING => warning,
E_PARSE => parsing error,
E_NOTICE => notice,
E_CORE_ERROR => core error,
E_CORE_WARNING => core warning,
E_COMPILE_ERROR => compile error,
E_COMPILE_WARNING => compile warning,
 

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