shamuraq

Hi, I have an array that i want to 'echo' in a foreach loop: foreach($numbers as $num){ echo $num.':'; } i need the output to be 459:534:141 instead of 459:534:141:. How do i remove the ':' at the final loop? Thanx in advance.

I have this list as an array: 1. [Question - Geography Chapter2] How would you describe humans' relationship with the physical environment? (Page 42) 2. [Question - Geography Chapter4] What is a natural resource? (Page 67) 3. [Question - Geography Chapter3] What are two or three resources which you cannot do without? What are the reasons for your choices? (Page 52) ... 129. [Question - Geography Chapter6] What is the human-centered view on the use of natural resources? (Page 339) 130. [Question - Geography Chapter7] What are the benefits of using products with a smaller environmental footprint? (Page 342) I would like to remove: - The square brackets and everything in it. I am hoping that the questions would start without the eg; [Question - Geography Chapter7] etc. - The round brackets and everything in it. I am trying to delete the references to the page number. Is there a simple an clean way to do it? Any pointer is truly appreciated. Thanx in advance.

What does the values in 0,5 in substr($v, 0, 5) refers to?

I tried as suggested: $arrFiles = array(); $dirPath = "./"; $files = scandir($dirPath); $required = array_filter($files, fn($v)=>str_starts_with($v, 'alg00')); echo '<pre>' . print_r($required, 1) . '</pre>'; The error: Fatal error: Uncaught Error: Call to undefined function str_starts_with() ...php:29 Stack trace: #0 [internal function]: {closure}('.') #1 /...php(29): array_filter(Array, Object(Closure)) #2 {main} thrown in ...php on line 29

Hi guysm I have a folder containing these files: alg001.php alg002.php alg003.php alg004.php alg005.php algComp.php ranFrac.php ranalg.php randec.php randint.php I would only like to store the names of files alg001.php, alg002.php, alg003.php, alg004.php, alg005.php into an array. How do i achieve this with preg match?

how do i convert the following script to adopt ternary operator to shorten it? $radint = mt_rand(1,33); $flip = mt_rand(1,2); if($flip == 2){ $radint *= -1; } Thanx in advance.

Tes... Thats exactly what i wanted. But can you explain the breakdown of "%-35 = %5d <br>"?

I have a function randomly take 4 unique numbers from an array and multiply them. Problem with the script below is it only print out the products. I would like for each set of 4 numbers and its product to be in its own array and all the arrays into a main array, forming a 2 dimensional array. My current script: //Pruning outcome from controlled lists of Prime Numbers $primes = array(2, 3, 5, 7, 11, 13, 17, 19, 23); function getAllCombinations($arr, $n, $selected = array(), $startIndex = 0) { if ($n == 0) { $product = 1; foreach ($selected as $prime) { $pr[] = $prime; $product *= $prime; $pr[] = $prime; } echo "Product: $product\n"; return; } for ($i = $startIndex; $i < count($arr); $i++) { $selected[] = $arr[$i]; getAllCombinations($arr, $n - 1, $selected, $i + 1); array_pop($selected); // Backtrack and remove the element for next iteration } } getAllCombinations($primes, 4); The output: Product: 210 Product: 330 Product: 390 Product: 510, etc. The preferred method is a 2 dimensional array as such: [0][0] =>2 [0][1] =>3 [0][2]=>5 [0][3]=>7 and the product would be in [0][4] =>210 [1][0] =>2 [1][1] =>3 [1][2]=>5 [1][3]=>11 and the product would be in [1][4] =>330 etc. Any pointers is greatly appreciated.

Hi guys, I am trying to convert randomized float to fractions. For eg; 66.666666666667 = 66 2/3 Any pointers?

Its like this:' $value = array( array(3075,15,461.25,16,535.05), array(3075,15,461.25808,16,535.05),//to be removed array(3075,15,461.2,16,535.05234)//to be removed ); $value = array_filter($value, function ($v) { foreach ($v as $x) { if (strlen(substr(strrchr($x, "."), 1)) > 2) return false; } return true; }); var_dump($value); But nothing came out during testing. What could be wrong?

Hi guys, I am looking fer a way to delete numbers with decimal values more than 2 decimal place in my arrays. Any pointers? Thanx in advance.

Hi guys, am not very good with regex. I need to replace all double backslashes '\\' in my string into single backslashes '\'. I tried: $pattern = '[\\]'; $replacement = '/\/'; ?> <td width="100%"> <?php echo preg_replace($pattern, $replacement,$q[$i]);?></td> i also tried a few other combinations but the output is either blank or more backslashes are added. Any pointers are appreciated. Thanx in advance.

Hi all, I'm trying to list the possible combinations in fraction from 1/1 + 1/1 until 9/9 + 9/9. So i came up with this <?php //numbers of combination for w/x + y/z $num1=1; $den1=1; $num2=1; $den2=1; $row=1; for($w=0; $w<9; $w++){ echo $row.') '; $row=$row+1; echo $num1.'/'.$den1.' + '.$num2.'/'.$den2.'<br>'; $num1=$num1+1; for($x=0; $x<9; $x++){ echo $row.') '; $row=$row+1; echo $num1.'/'.$den1.' + '.$num2.'/'.$den2.'<br>'; $den1=$den1+1; for($y=0; $y<9; $y++){ echo $row.') '; $row=$row+1; echo $num1.'/'.$den1.' + '.$num2.'/'.$den2.'<br>'; $num2=$num2+1; for($z=0; $z<9; $z++){ echo $row.') '; $row=$row+1; echo $num1.'/'.$den1.' + '.$num2.'/'.$den2.'<br>'; $den2=$den2+1; } } } } ?> The problem is it parse all the way to 7380) 10/82 + 730/6561. Where did it go wrong? Thanx in advance...

Solved it... I guess the problem is because am trying to store it in a variable... But i changed to to echo nl2br("$summary"); But am curious tho... Is there anyway to store it in a variable without causing those errors?

Followed ur advice and removed the nl2br from the insert into sql file. But am still getting the same error.