大约有 5,000 项符合查询结果（耗时：0.0462秒） [XML]
php出现 Notice: Undefined index: xxx 的解决方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
php出现 Notice: Undefined index: xxx 的解决方法Php_Notice_Undefined_index出现 "Undefined index: xxx "警告的原因：PHP 本身不需要事先声明变量即可直接使用，但是对未声明变量会有提示，最好的办法是使用变量之前先检查变量是否存在。出现"...
php出现 Notice: Undefined index: xxx 的解决方法 - 更多技术 - 清泛网移...
php出现 Notice: Undefined index: xxx 的解决方法Php_Notice_Undefined_index出现 "Undefined index: xxx "警告的原因：PHP 本身不需要事先声明变量即可直接使用，但是对未声明变量会有提示，最好的办法是使用变量之前先检查变量是否存在。出现"...
php出现 Notice: Undefined index: xxx 的解决方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
php出现 Notice: Undefined index: xxx 的解决方法Php_Notice_Undefined_index出现 "Undefined index: xxx "警告的原因：PHP 本身不需要事先声明变量即可直接使用，但是对未声明变量会有提示，最好的办法是使用变量之前先检查变量是否存在。出现"...
How can I store my users' passwords safely?
... MD5 ? I've just started looking into password security. I'm pretty new to PHP.
6 Answers
...
What is the difference between is_a and instanceof?
...
Update
As of PHP 5.3.9, the functionality of is_a() has changed. The original answer below states that is_a() must accept an Object as the first argument, but PHP versions >= 5.3.9 now accept an optional third boolean argument $allow_s...
Can JavaScript connect with MySQL?
...
No, JavaScript can not directly connect to MySQL. But you can mix JS with PHP to do so.
JavaScript is a client-side language and your MySQL database is going to be running on a server
share
|
impr...
Memcached vs APC which one should I choose? [closed]
...lways use an opcode cache, which APC is (also APC will get integrated into php6 iirc, so why not start using it now).
You can/should use both for different purposes.
share
|
improve this answer
...
Converting a UNIX Timestamp to Formatted Date String
Using PHP, I want to convert UNIX timestamps to date strings similar to this: 2008-07-17T09:24:17Z
9 Answers
...
Single vs Double quotes (' vs ")
...b Development often consists of many programming languages. HTML, JS, CSS, PHP, ASP, RoR, Python, ect. Because of this we have many syntax conventions for different programing languages. Often habbits from one language will follow us to other languages, even if it is not considered "proper" i.e. com...
Cross-Origin Request Headers(CORS) with PHP headers
I have a simple PHP script that I am attempting a cross-domain CORS request:
11 Answers
...