PHP

The string operation has a variable: $ arr [0] 1. I want to determine the length of the variable, which contains several characters. how can I do this? 2. what should I do if I want to take two places on the left? I just got in touch with PHP.

===== Cainiao question: php reading a text file ===== I wrote a function to read a text file through php, and counted the total number of lines of the text, empty rows are not counted, but I don't know how to judge whether a row is empty. every time

Interview question: I will give you a text file containing 0.1 billion QQ numbers. please use a program to sort it in ascending order !.. Interview question: I will give you a text file containing 0.1 billion QQ numbers. please use a program to sort

When I Install shuguang cms to a VM, the following error occurs: Accessdeniedforuser 'root' @ 'localhost' Sugon cms is an installation program based on thinkphp. installation in Install under the project folder is required when it arrives at the VM.

The imported database is correct, but is it garbled? The data imported from my database in windows to linux is correct, and the data displayed in PHPMYADMIN is normal. is the data on my PHP website garbled? Do you want to configure something in php.

The default homepage of wordpress wrote a wordpress topic the day before yesterday. but there is a problem. how can I display the content of a page when I log on to wordpress the day before yesterday? Because: ===========& lt ;? Phpwhile (have_posts

Let me take a look at this code. how is it garbled after running? Let me take a look at this code. how is it garbled after running? & Lt ;? Phpfunction & nbsp; my_headlines ($ url) & nbsp ;{& nbsp; & nbsp; $ rdf & nbsp ;=& nbs help me read this code,

Hello! I want to create an internal content Bar. Use tables to control its location. For example: | --------------------------------------- | CAD | ___________ embedded data in a php table Dear heroes! I want to create an internal content Bar. Use

Hello, this is my report. By the way, I would like to ask you a question. do you know PHPMPS? I want to retrieve information on the homepage. how can I retrieve it ?, I don't know PHPMPS. I want to help you with it. is my avatar yours? you can add

An error occurred while getting started with ZendFramework. do you know anyone has read PHPWEB2.0 development practices? The code in this book is always incorrect in my windows system. here is the code & lt ;? Require_once & quot; Zend/Loader. php &

After gzcompress is inserted in mysql, the data is always 'x'. why is it true? I use php to serialize an array and then import the processed data to mysql in gzcompress, however, I found that the stored data is always x. why. Moreover, both

An array $ array [$ I] is provided by experts. if the values include, 3, 5, and 1, 5 ......... I want it to be classified and repeated. The final result is 1, 2, 3, 4, 5 ......... what should I do ?, Array_uniq algorithm for advice. experts come in

Solve the problem of changing three-dimensional data to two-dimensional arrays. array (0 = & gt; array ('a' = & gt; array (0 = & gt; 'A', 1 = & gt; 'A'), 1 = & gt; array ('a' = & gt; array (0 = & gt; 'A', 1 = & gt; 'A') how to change to an array

Php file protection to prevent downloading problems: users can read files in a folder after passing session verification. However, you do not want to obtain the file directly from the URL path when the user does not pass the verification. How can I

Under the php framework has what good debugging method under the php framework has what good debugging method, points, http://topic.csdn.net/u/20091120/17/fee6b22d-cb0b-49b3-9eda-9f95598d56f4.html,var_du under the php framework has what good

How can I output a * number at the specified table location? For example, my output is not in the current position, but in the specified position. how can this problem be achieved ?, Where ?, Output when generating a table & lt; table & gt; & lt; tr

How to use PHPEXCEL? I want to use A program to implement A filling function because it has A large number of EXCEL lines and A large number of lines. I want to use column A's values, according to some of my algorithms, I can get a value, fill it in

Is there any way to achieve the effect of the image like Windows? if the solution is solved, I will add another 1000 points. In fact, I am working on my personal homepage. recently I have an idea that I want to build a wall with a wall. the image is

After the website submodule is uploaded, the original page display is inexplicably affected. After uploading, the color of the original website & nbsp; is changed. it is estimated that the CSS file cannot be found (I did not overwrite the original

Mysql multi-table query is an error. Hello, everyone. There are three tables in my forum. they are displayed on the Reply page, just like this page, however, the reply content on the right can be queried from the data table, but the basic