1. When clean and divided into multi-level directory storage. At least I can mitigate I/O pressure. The following method allows you to schedule tasks with the system. Run it once a week. Empty cookies seven days ago
First, use PHP to automatically
1, stitching stringThe concatenation string is one of the most commonly used string operations and supports three ways to stitch strings in a PHP tutorial. is a dot. Delimiter {} operation, there is also a dot equals. = to operate, the dot equals
1. Can read random string
This code creates a readable string that is closer to the word in the dictionary, and is practical and has a password validation feature.
Copy Code code as follows:
/**************
* @length-length of
such as validation code or the generation of statistical icons based on Dynamic Data, as well as some of the GD library operations described earlier, belong to the dynamic drawing image. In web development, however, you will often be able to handle
Title: Enter a string that prints all the combinations of characters in the string. For example, if you enter ABC, it has a combination of a, B, C, AB, AC, BC, ABC.
Analysis: In the 28th question of the series "string arrangement", we discussed in
Even if you're using PHP for years, you'll stumble across functions and functions that you never knew about. Some of them are very useful, but not fully utilized. Not everyone will read the manual and function references from beginning to end.
1,
13.1 Generating Images
PHP can manipulate image processing. If you have installed the GD library, you can even use PHP to generate images.
?
Header ("Content-type:image/gif");
$string =implode ($ARGV, "");
$im = Imagecreatefromgif
First of all introduce a relatively simple but essential and practical knowledge, can be used as a manual query, suitable for beginners like me to see.
Introduction to PHP Common library functions
PHP string operation of common functions1.
Strlen () function and Mb_strlen () function
In PHP, the function strlen () returns the length of the string. The function prototype is as follows:
Copy Code code as follows:
int strlen (string string_input);
Parameter
The examples in this article illustrate the usages of two PHP Curl encapsulation classes, which allow us to use PHP curl related functions very conveniently. Share to everyone for your reference. Specifically as follows:
We need to open the PHP
1, PHP encryption and decryption
PHP encryption and decryption functions can be used to encrypt some useful strings stored in the database, and through reversible decryption of strings, the function uses Base64 and MD5 encryption and decryption.
A, imitation Taobao comments purchase records hidden part of the user name, the following code is available.
Copy Code code as follows:
function Cut_str ($string, $sublen, $start = 0, $code = ' UTF-8 ')
{
if ($code = = ' UTF-8 ')
{
5. Other Miscellaneous5.1 Generating Images PHP can manipulate image processing. If you have installed the GD library, you can even use PHP to generate images.?Header ("Content-type:image/gif");$string=implode ($ARGV, "");$im = Imagecreatefromgif
5. Other Miscellaneous
5.1 Generating Images
PHP can manipulate image processing. If you have installed the GD library, you can even use PHP to generate images.
?
Header ("Content-type:image/gif");
$string =implode ($ARGV, "");
$im =
File upload 1, client settings: (1), in the label Enctype and method two properties indicate the corresponding value. &NB [...]
First, the file upload
1, client settings:
(1), in
Second, File download
Simple file
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