PHP

I want to write a regular expression, but I won't write it! Help !! $ A = & quot; └ ── Ger & quot; & nbsp; $ B = & quot; ── └ Ggggg & quot ;; I want to replace all the symbols with the delimiter and the -- symbol as null & quot;. how can I write

Php download picture incomplete write a simple php file for downloading a single image: PHPcode & lt ;? Php $ url = $ _ POST ['URL']; // $ url = & quot; gallery/ddung/2.jpg& quot ;; // download the image link DownImage (the php download image is

How to write this regular expression to replace the structure? & Lt; divid = & quot; divPdf1 & quot; title = & quot ;.. /2003Z/hb/z363.pdf # page = 3 & quot; class = & quot; downpdf & quot; style = & quot; cursor: hand replace the regular expression.

Why is the data not submitted in the message board database filled out when the message board is connected to the database ?? File conn. php: & lt ;? Php $ conn = @ mysql_connect (& quot; localhost & quot;, & quot; root & quot;, & quot;) ordie (&

JS questions about image scrolling RT is about image scrolling, and the desired effect is not that of rolling left and right all the time. There are two arrows on the left and right. the picture you just saw on the page does not scroll. a total of

A small problem with a data type in mysql. if the string contains special characters such as equal signs and & amp; in mysql, I use char (50 ), how can I solve the problem of entering the equal sign and the ampersand & amp; in the database into a

If (isset ($ _ POST [& quot; sel & quot;]) {$ a =$ _ POST [& quot; sel & quot;]; unset ($ _ POST [& quot; sel & quot;]; echo & quot; & lt; scriptlanguage = 'javas: how to prevent repeated data submission during refresh when using the POST method If (

High score problems a call field callercaller in a database table has a common mobile phone number, a mobile phone number with 0, and a landline number like 010-1234567. how can I remove the phone numbers with 0 in front? For efficiency, the

Mysql_num_rows ($ result) is always equal to 0. why? Urgent & lt ;? Phpsession_start (); $ db = mysql_connect (& quot; localhost & quot;, & quot; root & quot;, & quot; 205513 & quot;) ordie (& quot; u mysql_num_rows ($ result) is always equal to 0.

How can I add a database? I don't know. I explained [code = XML] [/code] & lt; to me ;? Xmlversion = & quot; 1.0 & quot; encoding = & quot; UTF-8 & quot ;? & Gt; & lt; item & gt; & nbsp; & I want to add a database. I don't know how to add it. [Code =

How does php compare queries? I don't know how to add comparison queries. if other parts are done well, I just don't know how to add comparison queries. how can I add them to databases? Need to insert a database ?, Should there be a comparison

Who can provide me with a program to implement the IP address query function on the webpage? It is to query the IP address on your website and then display the IP address from where it is found on the Internet to jump to another online, so you want

PHP method for intercepting email URLs! Example: If you want to intercept data from the email address @ to. com, I am a newbie! For example, after the 123456@163.com is intercepted, it becomes 163 ., Preg_match ('/@ (\ w + )\. com/', $ s, $ m); echo

This works too? Is the string and 0 of all letters always equal? PHPcodeif (& quot; e & quot ;== 0) {echo & quot; Yes & quot ;;}# result: # Yes, & quot; e & quot; is it true if it is not a variable? Is the string and 0 of all letters always equal?

Php operation array problems include the following arrays: PHPcode // The following is the output result $ html = array ('2017-05-02 '= & gt; 1, '2017-'= & gt; 1, '2017-05-24' = & gt; 2, '2017-05-25 '= & gt; 2, '2017-05-28 '= & gt; 3); print_r (php

Ask how PHP calls PHPcode & lt; 1_C & gt; address & lt;/1_C & gt; & lt; your D & gt; phone & lt;/your D & gt; & lt; your a & gt; mobile phone & lt;/your a & gt; & lt; your F & gt; QQ & lt;/Your f & gt; & lt; your S & gt; EMAIL & lt; ask how PHP

The problem of repeated AJAX loading: when the mouse passes through an icon, AJAX is triggered and a small page is loaded, the problem is, after loading, is there a way to reload the icon after the mouse passes through? For more information, see .

About selectcount! For example, the table structure and data are as follows: idtypeidname12a22b & nbsp; 33c43d I want to implement selectcount (*) a on the select count (*) problem! For example, the table structure and data are as follows: Id

I am a Cainiao, and I am confused about asking for guidance. This year, I have been in my junior year, and I have studied major courses (Introduction to Database Systems). when I started this semester, I decided to go to a website to practice PHP

How can we determine the number of positive and negative numbers in each group? $ Arr = array ('3', '-1', '4', '2','-2'), array ('-3 ', '-1','-4', '-12','-2', '21', '13', '-16 '), array ('-5','-8', '4', '2');, PHPcode $ arr = a: How can I determine