大约有 5,800 项符合查询结果（耗时：0.0207秒） [XML]
How to check if field is null or empty in MySQL?
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If you would like to check in PHP , then you should do something like :
$query_s =mysql_query("SELECT YOURROWNAME from `YOURTABLENAME` where name = $name");
$ertom=mysql_fetch_array($query_s);
if ('' !== $ertom['YOURROWNAME']) {
//do your action
ech...
Create JSON object dynamically via JavaScript (Without concate strings)
...s very helpful to me. I wanted to generate a json variable to pass it to a php script using ajax. My values were stored into two arrays, and i wanted them in json format.
This is a generic example:
valArray1 = [121, 324, 42, 31];
valArray2 = [232, 131, 443];
myJson = {objArray1: {}, objArray2: {}};...
Get a list of resources from classpath directory
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Here is the code
Source: forums.devx.com/showthread.php?t=153784
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.regex.Pattern;
import java.util.zip.ZipEntry;
import java....
When are you supposed to use escape instead of encodeURI / encodeURIComponent?
...eURIComponent doesn't encode -_.!~*'(), causing problem in posting data to php in xml string.
For example:
<xml><text x="100" y="150" value="It's a value with single quote" />
</xml>
General escape with encodeURI
%3Cxml%3E%3Ctext%20x=%22100%22%20y=%22150%22%20value=%22It's%20a%20...
How do you increase the max number of concurrent connections in Apache?
...hive.org/web/20160415001028/http://www.genericarticles.com/mediawiki/index.php?title=How_to_optimize_apache_web_server_for_maximum_concurrent_connections_or_increase_max_clients_in_apache
ServerLimit 16
StartServers 2
MaxClients 200
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25
First o...
What's the difference between Require.js and simply creating a element in the DOM? [closed]
...ially the one near the bottom that links to stevesouders.com/tests/require.php
– Dave Kanter
Sep 29 '15 at 22:35
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Heavy usage of Python at Google [closed]
...ction services. (Internally Google people use many technologies including PHP, C#, Ruby and Perl). Python is well suited to the engineering process at Google. The typical project at Google has a small team (3 people) and a short duration (3 months).
Not to forget that Guido van Rossum the c...
Character Limit in HTML
... to win. That's why it's far better to check it on the server side, with a PHP / Python / whatever script.
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What does appending “?v=1” to CSS and Javascript URLs in link and script tags do?
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In case you're running pure HTML (instead of server pages JSP, ASP, PHP) the server won't help you. In browser, links are loaded before the JS runs, therefore you have to remove the links and load them with JS.
// front end cache bust
var cacheBust = ['js/StrUtil.js', 'js/protos.common.js', ...
Function to calculate distance between two coordinates
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Derek's solution worked fine for me, and I've just simply converted it to PHP, hope it helps somebody out there !
function calcCrow($lat1, $lon1, $lat2, $lon2){
$R = 6371; // km
$dLat = toRad($lat2-$lat1);
$dLon = toRad($lon2-$lon1);
$lat1 = toRad($lat1);
$l...