[how to get 3 letters php function]

I would use str_repeat for this:

 

<?php
function hide($string, $start = 11, $length = 3, $repeater = "*"){
$front = str_repeat($repeater, $start);
$letters = substr($string, $start, $length);
$end = str_repeat($repeater, strlen($string)-($start+$length));
return $front.$letters.$end;
}

$strings = array("http://www.google.com", "http://www.yahoo.com", "http://phpsnips.com/forums");
foreach($strings as $string){
echo hide($string)."<br>";
}
?>

[View mySQL on my PC]

I like using Putty. its small, but it is command line which is faster than a gui.

[Unique Row based on date]

You could try this:

 

select * from table order by Column3 desc limit 2

[Date in MySQL query]

you need to have quotes around the date

[Host Domain With Dynamic IP]

I was using no-ip like 5+ years ago which I hear is a similar service. I am currently not on my computer to test this, but doesn't that still mask the URL doing it like that?

 

found this:

- Go to your DNS manager and create a DNS CNAME entry for your domain (abc.com) and make it go to your free no-ip subdomain (xyz.redirectme.net)

[Host Domain With Dynamic IP]

I have a dynamic IP address, and port 80 blocked (So I use port 3333) and I was wondering if anyone had any solutions to use a domain with that. I would like to register a domain under godaddy. I have see some sites were it masks the urls, so if I go to:

http://mysite.com

 

Then click on a link that takes me to:

http://mysite.com/somepage.php

 

the URL then still displays:

http://mysite.com

 

I would like to have a way around this, does anyone know of any free solution?

[check to see if image exists at URL?]

Okay, if you use the first one, you might also want to check the mime type, which can be found from curl_getinfo as well as the http_code from above

[check to see if image exists at URL?]

you can also do it like this:

 

$size = getimagesize($url);
if($size !== false){
// Image exists
}else{
// Image doesn't exist
}

[check to see if image exists at URL?]

I would use cURL

 

Something like this:

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
$opt = curl_exec();
$info = (object)curl_getinfo($ch);
if($info->http_code == 200){
// Image exists
}else{
// Image doesn't exist
}

[\ is added after all my " marks]

This is how you can check:

 

<?php
phpinfo();
?>

 

You will probably need to restart Apache after you change the value to off.

[Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result reso]

I see your inserting into the database without escaping your strings. I have a feeling the rows that are failing have a quote in them and the ones that work don't have a quote in them.

 

This could be the problem...

[need to reset columnA if columnB is not null]

to help you build a better table here is my suggestion:

 

1. Make a points table

2. have 3 fields: member_id, create_date, points

3. every time you give out points insert a value into the table

4. every time you remove points insert a value into the table (as a negative point value)

5. to get a total sum:

select sum(points) as amount from myTable where member_id = 123;

6. to get a total sum between 2 dates:

select sum(points) as amount from myTable where create_date between '2011-01-01' and '2011-02-01 23:59:59' where member_id = 123;

 

There is a basic way of what you could do.

[Problem with if -]

be careful when using floats, you should round them because some floats are off by just a tiny bit.

Read (short): http://edn.embarcadero.com/article/22507

 

You should round your floating point values to 2 decimal points using round especially when comparing two values.

[PHP/jQuery get file as uploaded]

I would recommend using a database, but this is a non-database way (NOT TESTED!):

 

function checkFolder(){
$.ajax({
	type: "GET",
	url: "/process/checkfolder.php",
	success: function(data){
		$("#myDiv").append(data);
	}
});
}
setInterval("checkFolder()", 10000);  // Run checkFolder every 10 seconds

 

session_start();
if(!isset($_SESSION['last_check']))
$_SESSION['last_check'] = 0;
$last_check = $_SESSION['last_check'];
$_SESSION['last_check'] = time();
$newest_files = array();
foreach(glob("folder/*.*") as $file){
if(filemtime($file) >= $last_check){
	$newest_files[] = $file;
}
}

echo "<div>".implode("</div><div>", $newest_files)."</div>";

[Embedding HTML code within PHP - performance issue?]

I did the same, they both finished in about 0.0074920654296875 seconds. That was for a basic page, what about a more complex page?

[Embedding HTML code within PHP - performance issue?]

supposedly from what I hear the second way is slower, because it has to open/close or start/stop the php parser. Also the second way looks really messy IMO.

 

I also think HEREDOC is nice, not sure if it has anything to do with your question but...

 

<?php
$variable = 100;
echo <<<HTMLPHP
<p>"This has single and double quote's that are not escaped."</p>
<p>$variable</p>
HTMLPHP;
?>

[nl2br?]

when you look in the database do you see \n or a newline?

 

if you see \n, that than is your problem. don't save it in the database as \n, save it as a newline.

[How do I reflect the text content of the variable $a in this text form?]

I believe your looking for this:

 

<input type="text" name="artist" value="<?php echo $a; ?>">

[User multiple login but having $_SESSION variable problem]

what it sounds like is happening is that you are over writing session data.

 

I would do something like this:

$_SESSION[0] = array(
"ID" => 123123,
"something" => "some value"
);
$_SESSION[1] = array(
"ID" => 123321,
"something" => "some value again"
);

[New PHP Programmer needs help]

Change this:

$selected_radio = $_POST['method'];

 

To this:

$selected_radio = isset($_POST['method'])?$_POST['method']:"";

 

The reason you have that error is because you have php strict mode on, and since you have not posted the form yet, "method" doesn't exist.

[nl2br?]

why not use str_replace?

 

Because that makes for bad database data.

 

I don't know how your inserting your values, php? phpMyAdmin? Other?

[nl2br?]

because it is \n not /n

 

also \n is a string, so that wont be converted.

[Syntax error when using new in constructor parameter]

parameters can not do anything except hold values, yours would then try to run the constructor of the class Foo, and a parameter is not allowed to do that.

[blocking certain urls in a php form]

Okay, this should handle sub-domains.

 

<?php
$url = $_POST['url'];
if(!preg_match("/^(http:\/\/|https:\/\/)/", $url)){
$url = "http://$url";
}
$url_info = (object)parse_url($url);
$domain = preg_replace("/^www\./","",$url_info->host);

$BlockedDomains = array('nepwk.com', 'teleworm.com', 'yopmail.com', 'adf.ly');
$mesaj = "<div class=\"msg\">Your URL has been submitted!</div>";
foreach($BlockedDomains as $dom){
$dom = preg_quote($dom);
if(preg_match("/$dom/", $domain)){
	$mesaj = "<div class=\"error\">Your URL has been blocked by our system!</div>";
	break;
}
}
echo $mesaj;
?>

[Syntax error when using new in constructor parameter]

You can't have $foo = new Foo()

 

Try this:

 

public function __construct( $string = 'abc', $foo = null ) {
	if($foo == null)
		$foo = new Foo();
	$this->string = $string;
	$this->foo = $foo;
}