<?php
$hp = 0;
while($hp < 50) {
$flip = rand(0,2);
if ($flip == 1) {
echo "<p>X-Ray</p>";
$hp += 15;
} elseif ($flip == 2) {
echo "<p>Special Move</p>";
$hp += 10;
} else {
echo "<p>Punch</p>";
$hp += 5;
}
echo "<p>Total so far: $hp</p>";
echo "</br>";
}
?>
This is a PHP code. When I run it, it works fine. However, when I change it to this code below it doesn't.
<?php
$hp = 50;
while($hp > 1) {
$flip = rand(0,2);
if ($flip == 1) {
echo "<p>X-Ray</p>";
$hp -= 15;
} elseif ($flip == 2) {
echo "<p>Special Move</p>";
$hp -= 10;
} else {
echo "<p>Punch</p>";
$hp -= 5;
}
echo "<p>Total so far: $hp</p>";
echo "</br>";
}
?>
Please help. tHE CHANGES I MADE ARE THE HIGHLIGHTED ONES.
You never created $hp properly in the second version:
50;
doesn't do anything. It just tells php "here, have a 50", and php goes "gee, thanks, ok, whatever" and moves onwards. Then you have
while($hp > 1) {
Since $hp is undefined, it's null, and the code parses/executes as:
while($hp > 1) {
while(null > 1) {
while(0 > 1) {
FALSE -> exit loop
You never created $hp properly in the second version:
50;
If you do change it to $hp = 50;
Related
I'm having trouble making a simple count work. Right now 0 is constantly displayed when I run the code and I know it's because I set count to 0. But it should be displaying the number of times "Fizz" is displayed.
I'm sure it's simple but I just can't see what!
public function __construct($firstParam, $secondParam, $firstSound = "Fizz", $secondSound = "Buzz", $numbers = 100) {
$this->firstParam = $firstParam;
$this->secondParam = $secondParam;
$this->firstSound = $firstSound;
$this->secondSound = $secondSound;
$this->numbers = $numbers;
$this->numsArray = $numsArray;
}
public function __toString() {
$count = 0;
for ($i = 0; $i < count($this->numsArray); $i++){
$val = $this->numsArray[$i];
if ($val == $this->firstSound) {
$count++;
}
}
$print = "Number of Fizzes: ".$count;
return $print;
}
public function execute() {
$this->numsArray = array();
if ($this->secondParam > $this->firstParam) {
for ($i = 1; $i <= $this->numbers; $i++){
if ($i % $this->firstParam == 0 && $i % $this->secondParam == 0) {
$this->numsArray[] = "\n".$this->firstSound.$this->secondSound."\n";
} elseif ($i % $this->firstParam == 0) {
$this->numsArray[] = "\n".$this->firstSound."\n";
} elseif ($i % $this->secondParam == 0) {
$this->numsArray[] = "\n".$this->secondSound."\n";
} else {
$this->numsArray[] = "\n".$i."\n";
}
echo $this->numsArray[$i-1];
}
} else {
echo "\n".' First Number Bigger Than Second '."\n";
}
}
In your execute you are not assigning the values to numsArray[i] also you inject new line characters that will not match the equality you just when checking $val. Also I notice you use zero index to check them and index 1 to load it. Change execute to:
for ($i = 0; $i < $this->numbers; $i++){
if ($i % $this->firstParam == 0 && $i % $this->secondParam == 0) {
$this->numsArray[i] = $this->firstSound.$this->secondSound;
} elseif ($i % $this->firstParam == 0) {
$this->numsArray[i] = $this->firstSound;
} elseif ($i % $this->secondParam == 0) {
$this->numsArray[i] = $this->secondSound;
} else {
$this->numsArray[i] = $i;
}
echo $this->numsArray[$i];
This is a better binary string comparison for php...
if (strcmp($val, $this->firstSound) == 0)
My html document has the following form:
<form action="PrimeNumber.php" method="post">
Enter a number to determine if it is a prime number: <input type="text" name="numb" size="10">
<input type="submit" value="Check for Primeness">
</form>
Edit: Using a different code now but can't get it to echo a statement no matter what I do. Anyone know how I can make it echo is a prime number or is not.
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
if (isset($_POST['numb'])) {
$num = $_POST['numb'];
function isPrime($num) {
if($num == 1) {
return false;
}
if($num == 2) {
return true;
}
if($num % 2 == 0) {
return false;
}
for($i = 3; $i <= ceil(sqrt($num)); $i = $i + 2) {
if($num % $i == 0)
return false;
}
return true;
}
}
}
?>
simple and easy to understand code, and working as well. do little changes according to your requirement, like assign input text value to $a variable and you good to go.
$a = 51;
for($i=2; $i < $a; $i++){
if($a % $i == 0){
echo "Numberis not prime.";
break;
}
else{
echo "Number is not prime.";
break;
}
}
A simple function to check is prime number:
function is_prime($p) {
return ($p > 1) && (($p%2 >= 1) && ($p%3 >= 1) && ($p%5 >= 1)) || in_array($p, [2,3,5]);
}
function checkPrime($num){
$isPrime = true;
for($i = 2; $i <= sqrt($num); $i++)
{
if($num % $i == 0)
{
$isPrime = false;
}
}
if($isPrime == true)
{
return "$num is prime number";
}else{
return "$num is not prime number";
}
}
echo checkPrime(29);
The output is
29 is prime number
For More Details
You may use the gmp package and correct your code because I got an output as 11 not being a prime number or use the following function as an alternative.
function isPrime($num) {
if($num == 1) {
return false;
}
if($num == 2) {
return true;
}
if($num % 2 == 0) {
return false;
}
for($i = 3; $i <= ceil(sqrt($num)); $i = $i + 2) {
if($num % $i == 0)
return false;
}
return true;
}
More information is available at the following page.
A simple function to help you find out if a number is a prime number
<?php
function fn_prime($number) {
$i = 2; $result = TRUE;
while($i < $number) {
if(!($number%$i)) {
$result = FALSE;
}
$i++;
}
return $result;
}
?>
The way I have made the following code is so that it gets the four newest images and HTML documents in a specific folder, and then displays them in order of date posted. Even though it gets the image sorting correct, the overlay system I'm using isn't working correctly.
NEW EDIT for this paragraph: I have fixed most problems except for one. For some reason now, the overlays have decided two trade images, so image 1 displays image 2's overlay, whilst image 2 displays image one's overlay.
If somebody can help, it would be greatly appreciated. I can give an example of the problem at the website I use the code on. The website, click on the thumbnails in the blue box-ish area.
<?php
$i = 1;
$maxiterations = 4;
foreach (glob("news_archive/*.png") as $path)
{
if($i < $maxiterations)
{
$docs[filemtime($path)] = $path;
}
else
{
break;
}
}
asort($docs);
$i2 = 1;
$maxiterations2 = 4;
foreach (glob("news_archive/*.html") as $path2)
{
if($i2 < $maxiterations2)
{
$docs2[filemtime($path2)] = $path2;
}
else
{
break;
}
}
asort($docs2);
$var1;
$var2;
$var3;
$var4;
foreach($docs2 as $timestamp2 => $path2)
{
if($i2 <= $maxiterations2)
{
if($i2 == 1)
{
$var1 = $path2;
}
elseif($i2 == 2)
{
$var2 = $path2;
}
elseif($i2 == 3)
{
$var3 = $path2;
}
elseif($i2 == 4)
{
$var4 = $path2;
}
$i2 = $i2 + 1;
}
else
{
break;
}
}
$varcount = 1;
$varcountmax = 4;
foreach($docs as $timestamp => $path)
{
if($varcount <= $varcountmax)
{
if($varcount == 1)
{
$prersub=substr($var1, 13, 16);
$output="<img class='scroll' src='$path' rel='#$prersub' />";
echo($output);
}
if($varcount == 2)
{
$prersub=substr($var2, 13, 16);
$output="<img class='scroll' src='$path' rel='#$prersub' />";
echo($output);
}
if($varcount == 3)
{
$prersub=substr($var3, 13, 16);
$output="<img class='scroll' src='$path' rel='#$prersub' />";
echo($output);
}
if($varcount == 4)
{
$prersub=substr($var4, 13, 16);
$output="<img class='scroll' src='$path' rel='#$prersub' />";
echo($output);
}
$varcount = $varcount + 1;
}
}
?>
Edit: I still have not solved the issue and differences in parts, when corrected, break other parts of the site completely.
I want to limit the number of pages displayed on my pagination php script below. This was a script made a few years back for me, and although I have read through similar problems on here, their coding is very different.
Any help with this would be really appreciated.
Here is my current script:
<?php
if ($max_pages>1) {
echo "<br>";
if ($page>0) {
echo 'Previous';
}
for ($x=0;$x<$max_pages;$x++) {
if ($page<>$x) {
echo ''.($x+1).'';
}
else {
echo '<span class="pagination">'.($x+1).'</span>';
}
}
if (($page+1<>$max_pages)) {
echo 'Next';
}
}?>
Your current script cycles $x between 0 and $max_pages.
What you can do is first replace them with $from_page and $to_page:
$from_page = 0;
$to_page = $max_pages;
...
for ($x=$from_page; $x < $to_page; $x++)
at which point the script will work just as before.
Now if you want to only display from $N pages before to $N pages after $page,
$N = 5; // display 5+5+1 = 11 pages
$from_page = $page - $N; if ($from_page < 0) $from_page = 0;
$to_page = $from_page + 2*$N+1; if ($to_page > $max_pages) $to_page = $max_pages;
$from_page = $to_page - 2*$N-1; if ($from_page < 0) $from_page = 0;
Not the most elegant way perhaps, but it will try to fit an 11-page area centered on the current page. You may want to also display a link to pages 0 and $max_pages-1.
MRE version
<?php
if ($max_pages>1)
{
$N = 5; // display 5+5+1 = 11 pages
$to_page = min($max_pages, max(0, $page - $N) + 2*$N+1);
$from_page = max($to_page - 2*$N-1, 0);
echo "<br>";
if ($page > 0)
{
echo 'Previous';
}
for ($x=$from_page; $x < $to_page; $x++) {
if ($page != $x) {
echo ''.($x+1).'';
}
else {
echo '<span class="pagination">'.($x+1).'</span>';
}
}
if (($page+1<>$max_pages)) {
echo 'Next';
}
}?>
I'm having a problem with my PHP pagination for a project.
It almost works but it doesn't seem to display the numbers correctly.
I want only 6 more page numbers to display after the selected and one before;
(also if you are on page one display 7 after)
For example:
If on Page 1: 1/2/3/4/5/6/7/8
If on Page 2: 1/2/3/4/5/6/7/8
If on Page 5: 4/5/6/7/8/9/10/11
If on Page 10: 9/10/11/12/13/14/15/16
This is my code so far...
if($page == ceil($NumOfPages) && $page != 1){
for($i = 1; $i <= ceil($NumOfPages)-1; $i++){
if($i > 0){
echo "{$i}";
}
}
}
if ($page == ceil($NumOfPages) ) {
$startPage = $page;
}else{
$startPage = 1;
}
for ($i = $startPage; $i <= $page+6; $i++){
if ($i <= ceil($NumOfPages)){
if($i == $page) {
echo "<a href='/page/$i/' title='View movies page $i' id='pagelisel'>$i</a> ";
}else{
echo "<a href='/page/$i/' title='View movies page $i' id='pageli'>$i</a> ";
}
}
}
Any help would be greatly appreciated,
Thanks!
I assumed that (partly for myself... ;) ):
$page is the selected page
$startPage is the first page number you want to show
$numPages is already ceil-ed
First you need to find $startPage. Depending whether $page is the first one (ie has the value one 1, another assumption) or not. Your check is slightly off, as it check if it is equal to the last page.
if($page == 1) {
$startPage = 1;
} else {
$startPage = $page - 1;
}
Then you need to find out the last page number you want to print ($lastPage). So check if $startPage is near the end and set ~$lastPage` accordingly:
if($startPage + 7 > $numPages) {
$endPage = $numPages;
} else {
$endPage = $startPage + 7;
}
Finally, use you for-loop which seem ok, but loop from $startPage to $endPage.
Here's an alternative approach that should work for you as well:
$pageCurrent = $page;
$pagePrevious = $pageCurrent-1;
$pageClass = '';
$pageStart = 1;
$pageEnd = $pageCurrent+6;
$pageMax = ceil($NumOfPages);
if($pageCurrent==1){
echo "1";
}else{
echo "$pagePrevious";
}
for($i = $pageStart; $i <= $pageEnd; $i++){
if($i <= $pageEnd){
if($i == 1 && $pageCurrent != 1){
$pageClass = 'selected';
}else{
$pageClass = '';
}
echo "$i";
}
}