Linux Ask! is a Q & A web site specific for Linux related questions. Questions are collected, answered and audited by experienced Linux users.
Turn on register_globals in PHP
Answer:
When turned on, register_globals will automatically inject the PHP script with variables such as those from HTML form. The feature was DEPRECATED and turn off by default in the recent PHP distributions.
But if you still want to change it, you need to edit the php.ini
vi /etc/php.ini
Locate and set
register_globals = on;Remember to restart web server such as Apache if needed.
Change the PHP’s maximum allowed form post size
Answer:
The default maximum allowed form post size in PHP is only 8MB. If you want to change it, you need to edit the php.ini
vi /etc/php.ini
Locate and set (16M in the following example)
memory_limit = 16M;
post_max_size = 16M;
Try it with the number you need.
Also, remember to restart web server such as Apache if needed.
Check if an array is associative or sequential in PHP?
Answer:
In PHP, if you want to check if a given array variable is associative or sequential, you can use the following method:
<?php
$list = array(1, 2, 3, 4, 5);
$is_sequential = array_values($list) === $list;Change the PHP's maximum upload file size
Answer:
The default maximum upload file size in PHP is only 2MB. If you want to change it, you need to edit the php.ini
vi /etc/php.ini
Locate and set (100M in the following example)
memory_limit = 100M;
post_max_size = 100M;
upload_max_filesize = 100M;Try it with the number you need. (You might need to use a large value in post_max_size and memory_limit if you want to upload a file which is exactly 100M in size)
Also, remember to restart web server such as Apache if needed.
What is the PHP's short_open_tag
Answer:
PHP's short_open_tag is a way to use PHP in a PHP script without the normal PHP tag, e.g.
Instead of
# <?php echo "hello world"; ?>
You can use a simplified version.
# <? echo "hello world"; ?>
Although it is not recommended, if you want to set it, you can enable it by editing the php.ini
vi /etc/php.ini
Locate and set
short_open_tag = On
Also, remember to restart web server such as Apache if needed.
