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From PHP

$zz = '/[0-5]\w+/'; What is the + sign used for? Why is it not included in some of the examples below?

2017-10-213 answers

From PHP

array_walk() can't understand

2017-10-172 answers

From PHP

Why does nothing happen when I enter a number to submit?

2017-10-132 answers

From PHP

Why is w in date("w") less than 6? ?

2017-10-123 answers

From PHP

Regarding the problem of defined('AUTH')

2017-10-121 answers

From PHP

Problem with bool value output

2017-10-111 answers

From jQuery

Isn't rgb(255, 0, 0) red? There are three p tags with different background colors. Why only the first red one is returned?

2017-10-082 answers

From jQuery

JQ setting problem, a new problem occurs after adding a link to the p tag, the code is as follows

2017-10-081 answers

From PHP

After installing phpstudy, an error message appears when entering http://localhost/index.php.

2017-09-275 answers

From PHP

Questions about database

2017-09-252 answers