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PHP - How To Print Largest Even Number In Given String?
String: NodeJs is one of the best technology Quote
NodeJs is one of the best technology
How to print the largest even number? Similar TutorialsHey I have a string that looks like the following: Quote top-php-tutorials-2.html I have a script that cycles through each page. The 2 in the quote above is the page number. How can I extract the number between the - and the .html and replace it with another number? I've tried Code: [Select] substr($engine->selectedcaturl, 0,-6).$v.".html"But then I realised this only works for numbers that are 1 digit long Any input would be appreciated Hello. I am working on something where I don't want to do this.... if ($pages <= 1){$P=1;} elseif ($pages > 1 && $pages <= 2){$P=2;} elseif ($pages > 2 && $pages <= 3){$P=3;} elseif ($pages > 3 && $pages <= 4){$P=4;} elseif ($pages > 4 && $pages <= 5){$P=5;} elseif ($pages > 5 && $pages <= 6){$P=6;} elseif ($pages > 6 && $pages <= 7){$P=7;} elseif ($pages > 7 && $pages <= 8){$P=8;} elseif ($pages > 8 && $pages <= 9){$P=9;} elseif ($pages > 9 && $pages <= 10){$P=10;} This could go on and on and I would rather use the for $ i++ for this so it will wright out the coding for as little or as much as it needs rather then I. However I am not sure how I would do this. I also have if ($PN == 1){$L = "0,20";} elseif ($PN == 2){$L = "20,20";} elseif ($PN == 3){$L = "40,20";} elseif ($PN == 4){$L = "60,20";} elseif ($PN == 5){$L = "80,20";} elseif ($PN == 6){$L = "100,20";} were I will need to be able to add 20 to the number. Is this easily done? I'm a bit loss tried a few things and its not working properly. Hi all - I'm setting up a custom PHP blog. It pulls the data from a MySQL database which includes HTML tags (<p><div><span> etc...). I would like to display only up to 50 words per post on the blog page, which users can then read and click a link to then see the entire post. I've developed some code which does this, however, it seems to be stripping my HTML tags... Very sad! Would be very very grateful if one (or more) of you kind lot would have a look at my code and let me know if there is a easier (I'm all for easy) and proper way of implementing this so that it works without stripping my HTML tags. Cheers!!! Code: [Select] // Counts number of blog words in the content $blog_content_words = str_word_count($blog["content"], 1); // Sets the blog_words variable to 0 $blog_words = 0; // Prints title on page as a permalink to a post echo '<h1><a href="blog.php?id='.$blog["id"].'">'.$blog["title"].'</a></h1><p>'; // Loops while blog_word is under 50 while($blog_words < 50) { // Prints a word from blog_content_words array of blog post and adds a space afterwards echo $blog_content_words["$blog_words"]." "; // Adds 1 to the blog_words counter ++$blog_words; } // Adds a read more link to the post which links to full blog post echo '... <a href="blog.php?id='.$blog["id"].'">[read more]</a></p>'; If I wanted to print a string that contains a variable that also contains an array, how would I do so? I want to put the resulting echo into a log file. Example: “These are the books: $userArray and these are the pages: $pagesArray”; With just an array, I can use print_r($array, true) to get an array formatted for use in a string (which works well for my purposes) but this doesn’t work with two arrays unless I do this manually. (Such as setting the $user_array = print_r($userArray). But I want to write a function that will take a string, potentially containing arrays (as variables), and interpolate/make them legible for humans. (Some of the arrays are also multidimensional.) But it looks like I can't even concatenate a string and an array. $string = $string . $array. gives an error, array to string conversion. I don’t understand PHP very well so please explain what is going on here. and the best way to record something like the Example above. I have a database of 100 lines which have echoed onto the page so each line within the database is printed. I would like to limit it to ten. However, I have tried a whole range of different loops but none of them seek to work. Some of them print the database ten times so I have 1000 lines on the page. Can anyone advise the best method of limiting how many lines within a database are printed on the page? Hello, I am attempting to create a script where a user puts a text string into a form and clicking on submit. Then it adds that text string to a mysql database and gives the user a link back to it. Something like mysite.com/key.php?id=4 and when going to that link it will display the text string from the database but printed in an image. I wrote something up but I cannot get it to work. I may be a little in over my head. Any help is appreciated.
The way I coded this all to work is the user inputs the information into index.php which givekey.php inserts that into the database. I have not yet figure out how to do this in one single step. After that I wanted it to navigate directly to key.php which would display the key and the link to that page with the ?key=XX attribute. getkey.php
<?php
require_once 'dbinfo.php';
// database connection
$id = $_GET['id'];
// do some validation here to ensure id is safe
$link = mysql_connect($servername, $username, $password);
if (!$link) {
die('Could not connect: ' . mysql_error());
}
@mysql_select_db($database) or die( "Unable to select database");
$sql = "SELECT ukey FROM keycode WHERE id=$id";
$result = mysql_query("$sql");
$row = mysql_fetch_assoc($result);
mysql_close($link);
header("Content-type: image/png");
echo $row['ukey'];
?>
key.php <html> <head> <title>Your Key Is Ready</title> </head> <body> <img src="getkey.php?id=1" width="175" height="200" /> </body> </html>index.php
<html>
<head>
<title></title>
</head>
<body>
<section id="mid_section">
<div id="boxes">
<h1>
Testing input key
</h1>
<br/>
<form id="myform" action="givekey.php" method="post">
Key:<br />
<input type="text" value="ukey">
Source:<br />
<input type="radio" value="hb">HB<br />
<input type="radio" value="ig">IG<br />
<input type="radio" value="other">Other<br />
<button id="sub">Submit</button>
</form>
</body>
</html>
givekey.php
<?php
include_once('dbinfo.php');
$conn = mysql_connect($servername, $username, $password);
$db= mysql_select_db($database);
$ukey =$_POST['ukey'];
$hb =$_POST['hb'];
$ig =$_POST['ig'];
$other =$_POST['other'];
if(mysql_query("INSERT INTO `keycode`(`ukey`) VALUES ([$ukey]); INSERT INTO `source`(`hb`,`ig`,`other`) VALUES ([$hb],[$ig],[$other]);"))
?>
Edited by chrisb302, 13 November 2014 - 12:18 AM. How can I test if a string has a number at the end? i.e. smith1 instead of smith? I won't know how long the string is or whether there is more than 1 number but I will know that the string's last character is a number. Thank you! I can't figure out how to pull the number from a form name Unfortunately I cant use substr(); because non of the names are the same length... these are the form names cat_sub_id_1 cat_name_1 cat_order_1 cat_sub_id_2 cat_name_2 cat_order_2 cat_sub_id_3 cat_name_3 cat_order_3 this is a list of the numbers that I need to be pulled out. Hey guys, I have a url that looks like this http://www.mysite.com/our-company-t-2.html I need to extract the number at the end. It's 2 here but could be 2478 for example. Just wondering how I can do this. Would it need to do something like look for anything between "-" and ".html" ? I have a really weird thing that I have to do, and I can't figure it out. I've tried about 1 million nested loops, and just can't get this to work. What I need to do is get the longest number from a string. So, for example, take the following: $string = "asdfasd234kjljlkjlj34659823423sadfasdadasdfasdfas d3242sdasddsda2"; function getNumber($a) { //do something with $string and return the longest number from it } so that ... echo getNumber($string); will return '34659823423' Thanks in advance, fellas! I've really been racking my brain there. Hello, I'm working on an error form, and I want to check if the user inserted a number into the name field, and if so return an error. I thought this might of worked, but it doesn't: Code: [Select] if(is_int($_POST['name'])){ $arrErrors['name'] = 'Invalid name, remove numbers.'; } Many thanks I need to find first digit (any number 0 - 9) in a string. I thing I should be able to use: $NumberPosition = strpos($Source, "/[0-9]/", $NumberPosition+1); but it does not work, wonder what I am doing wrong? I was wondering if anyone knows a good way to check for an even number of each character in a string. For example if the string is "abbacc" then it will return true as there are two of each character. However if the string is "ababc" it will return false as there is only 1 c. Thanks for any help I've got a string which is usually abc-def-0123 but it sometimes has an additional dash and then a single digit (e.g. ghi-jkl-4567-1). It's always the same pattern and length, (three letters, a dash, three letters, a dash, 4 digits then the possibility of a dash followed by a single digit). What's the best way to test if the string ends in a dash followed by a single digit? Any help much appreciated! I have a large amount of text, (text can be different at any time), I count the number of characters in the string,and divide it by 2 so that half of the text will be in one variable, the other half in the other, however I am not sure how to get the split function, or whichever function to split it by the number of characters. example: $text = "lorem ispum dolar sit amet, consecterur adiscing elit. Donec dictum placerat sapien, in eliefend liber"; $cut = strlen($text)/2; //(here's where i cannot get it to work/do not know which function to use and how to use it) //but what I want it to do is to split it half way. I have a string in the form of "word1-word2-word3-word4-word5-word-6-word7", but I want to shorten it to 5 words only. How could I split a string in half but not in the middle of a word? $information = "This is the string of text, however at some point in the sentence a word may get split in half."; $cut = round(strlen($information)/2); ///where to cut (50%) $split1 = substr($information, 0, $cut); //first half $split2 = substr($information, $cut); // second half This topic has been moved to PHP Regex. http://www.phpfreaks.com/forums/index.php?topic=353613.0
Hi all dear
<!DOCTYPE html>
<html>
<body>
<?php
function generatePermutation($string,$start,$end){ if($start == $end-1){ echo "$string - "; } else{ for($i = $start; $i < $end; $i++){ $temp = $string[$start]; $string[$start] = $string[$i]; $string[$i] = $temp; generatePermutation($string,$start+1,$end); $temp = $string[$start]; $string[$start] = $string[$i]; $string[$i] = $temp; } }
}
$str = "ABC";
$n = strlen($str);
echo "All the permutations of the string a ";
generatePermutation($str,0,$n);
?>
</body>
</html>
I'm getting the dreaded " Invalid parameter number: number of bound variables does not match number of tokens" error and I've looked at this for days. Here is what my table looks like:
| id | int(4) | NO | PRI | NULL | auto_increment | | user_id | int(4) | NO | | NULL | | | recipient | varchar(30) | NO | | NULL | | | subject | varchar(25) | YES | | NULL | | | cc_email | varchar(30) | YES | | NULL | | | reply | varchar(20) | YES | | NULL | | | location | varchar(50) | YES | | NULL | | | stationery | varchar(40) | YES | | NULL | | | ink_color | varchar(12) | YES | | NULL | | | fontchosen | varchar(30) | YES | | NULL | | | message | varchar(500) | NO | | NULL | | | attachment | varchar(40) | YES | | NULL | | | messageDate | datetime | YES | | NULL |Here are my params:
$params = array(
':user_id' => $userid,
':recipient' => $this->message_vars['recipient'],
':subject' => $this->message_vars['subject'],
':cc_email' => $this->message_vars['cc_email'],
':reply' => $this->message_vars['reply'],
':location' => $this->message_vars['location'],
':stationery' => $this->message_vars['stationery'],
':ink_color' => $this->message_vars['ink_color'],
':fontchosen' => $this->message_vars['fontchosen'],
':message' => $messageInput,
':attachment' => $this->message_vars['attachment'],
':messageDate' => $date );
Here is my sql:
$sql = "INSERT INTO messages (user_id,recipient, subject, cc_email, reply, location,stationery, ink_color, fontchosen, message,attachment) VALUES( $userid, :recipient, :subject, :cc_email, :reply, :location, :stationery, :ink_color, :fontchosen, $messageInput, :attachment, $date);";
And lastly, here is how I am calling it:
$dbh = parent::$dbh;
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING);
if (empty($dbh)) return false;
$stmt = $dbh->prepare($sql);
$stmt->execute($params) or die(print_r($stmt->errorInfo(), true));
if (!$stmt) { print_r($dbh->errorInfo()); }
I know my userid is valid and and the date is set above (I've echo'd these out to make sure). Since the id is auto_increment, I do not put that in my sql (though I've tried that too), nor in my params (tried that too). What am I missing? I feel certain it is something small, but I have spent days checking commas, semi-colons and spelling. Can anyone see what I'm doing wrong?
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