I need to return a single result that combines the statements created from multiple arrays through multiple WHILE loops.
I have four arrays and am trying to get different outputs based on a condition. The arrays are all structured the same keys as one another, and the keys correspond to one event. One of the arrays may have multiple values per key, and the number of values inside this particular array needs to be checked to use a different output structure if it contains more than one value.
foreach ($closures as $closure) {
//stuff
for ( $i = 0; $i < $count; $i++){
$vcount = count( $locations[$i] );
while ( $vcount < 2 ) {
$result = "The ".$venue[$i]." has been reserved for an event today from ".$startTime[$i]." - ".$endTime[$i].".<br>";
//print_r($result); //looks good printed...
break;
}
while ($vcount > 1 ) {
$result = "The ".$venue[$i]."s have been reserved for an event today from ".$startTime[$i]." - ".$endTime[$i].".<br>";
//print_r($result); //looks good printed...
break;
}
}
return $result;
break;
}
I've tried every combination of "break," and of course it gives me different outputs but none are correct.
I've tried assigning different variables to each while loop ($result1 and $result2).
I've tried replacing $result with $result[$i] inside and outside the loops.
I've tried moving the placement of "return...".
While using print_r as shown it displays perfectly, but I cannot figure out how to put those results into a single output.
I've only been able to get the first result to output through my shortcode, and can only manage to get two results (one from each loops) when trying to combine them into a statement like:
$message = "".result1."".result2."";
You can use .= assignment operator to concatinate the result values to eachother
foreach ($closures as $closure) {
//stuff
for ( $i = 0; $i < $count; $i++){
$vcount = count( $locations[$i] );
// initiate the result
$result = "";
while ( $vcount < 2 ) {
// concatinate the value to $result
$result .= "The ".$venue[$i]." has been reserved for an event today from ".$startTime[$i]." - ".$endTime[$i].".<br>";
//print_r($result); //looks good printed...
break;
}
while ($vcount > 1 ) {
// concatinate the value to $result again
$result .= "The ".$venue[$i]."s have been reserved for an event today from ".$startTime[$i]." - ".$endTime[$i].".<br>";
//print_r($result); //looks good printed...
break;
}
}
return $result;
break;
}
Related
hi i have created watch points in this columns 1,2,3,4,5.....100 will come
Example: 1,2,4,5,34,56,100
from above 3 is missing first this number should return
$watchPoints = $videoWatchedData['watch_points'];
$fetArray = explode(",",$watchPoints); //unsorted 2,4,5,100,56,1,34
i want to sort the above one like this 1,2,4,5,34,56,100 and return first missing number.
What i have tried:
$sortFetchedArraysort = sort($fetArray ); //ksort,rosrt no one is working
$Expected = 1;
foreach ($sortFetchedArraysort as $Number){
if ($Expected != $Number) {
break;
}
$Expected++;
}
$percentageCount = $Number; // first missing number in my case output should return 3
exit;
Two problem i am facing one is sort not working second first missing number is not trturning.
Try this few code, check the live demo.
<?php
sort($array = explode(',', "10,1,2,4,5,6,25,36,75,100"));
print_r(current(array_diff(range(1, 100), $array)));
Hope this simple one, will be helpful for you. In your post you are sorting $fetArray but there is no need, you can check it like this.
<?php
ini_set('display_errors', 1);
$array=range(1,100);//your columns
//you should sort like this, but it is not at all required
$fetArray=array(2,4,5,100,56,1,34);
sort($fetArray);
//looping over array in which we are trying to find
foreach($array as $value)
{
//at the moment your that value is not present in array we will break from loop
if(!in_array($value, $fetArray))
{
break;
}
}
//at the moment we break from loop we will get the value which is not present
echo $value;
$watchPoints = "10,1,2,4,5,6,25,36,75,100";
$fetArray = explode(",", $watchPoints);
sort($fetArray);
for ($i = 0; $i < sizeof($fetArray); $i++) {
if ($fetArray[$i] != $i + 1) {
$missing = $i + 1;
break;
}
}
print($missing);
Lets say for example I have a result set from a MySQL query that has produced values: 3,5,10,11 and so forth...
I would like to iterate through a for loop in PHP but exclude the any iteration that would equal any number in results of my MySQL query.
As it stands I currently have:
for($i = 1; $i <= $num_rows; $i++)
{
if($i == 3 or $i == 5)
{
continue;
}
//Rest of loop...
As you will all appreciate hard coding these values is very time consuming and not very efficient. If any one could help it would be greatly appreciated.
If you can gather automatically those values you are currently hard coding, you can use in_array($search, $array[, $strict])
Like this :
$bypass = array(3, 5);
for($i = 1; $i <= $num_rows; $i++)
{
if( in_array($i, $bypass) )
{
continue;
}
// rest of the loop
}
PS : I prefer much more the "Dont Panic" answer, which doesn't use too many loops. (in_array will loop through the array to find your value). See his answer : https://stackoverflow.com/a/38880057/3799829
If your query results are returned as an array you can use
if(in_array($i, $results)) to do a check of $i against the results
Add your values into an array while you fetch your query results. I used PDO here for example, but you should be able to adapt it to whichever database extension you're using:
while ($row = $stmt->fetchObject()) {
$exclude[$row->value] = true;
// whatever else you're doing with the query results
}
If you use the values as keys in the array of things you want to skip, checking for them in your for loop should be more efficient than using in_array.
for($i = 1; $i <= $num_rows; $i++) {
if (isset($exclude[$i])) continue;
// rest of loop
i want to calculate two operations with the help of loop. They are already working and providing result i need. But i want them to look more like coding. So if anybody can help them with the help of for in php
for($i=0;i<something;$i++){
$temp_calc = ;
}
here are two statements.
In first statement length of array is 9.
In second statement length of array is 12.
both statements to be solved in different for loop as they are totally different questions.
$temp_calc = 10*$temp_array[0]+9*$temp_array[1]+8*$temp_array[2]+7*$temp_array[3]+6*$temp_array[4]+5*$temp_array[5]+4*$temp_array[6]+3*$temp_array[7]+2*$temp_array[8];
$temp_calc = 1*$temp_array[0]+3*$temp_array[1]+1*$temp_array[2]+3*$temp_array[3]+1*$temp_array[4]+3*$temp_array[5]+1*$temp_array[6]+3*$temp_array[7]+1*$temp_array[8]+3*$temp_array[9]+1*$temp_array[10]+3*$temp_array[11];
Thanks in advance
It will be a little simpler to use a foreach loop rather than a for loop. If you specifically need to use a for loop because it is a requirement of an assignment, you can check the PHP documentation. There are some examples there of using a for loop to loop over an array. This is a common and basic control structure and it will be more valuable for you to really understand how to use it. The more important part is what goes on inside the loop. There are multiple ways to do this, but here are some basic examples.
First one:
// initialize multiplier and result outside the loop
$multiplier = 10;
$result = 0;
// loop over the values
foreach ($temp_array as $value) {
// add the value * multiplier to the result and decrement the multiplier
$result += $value * $multiplier--;
}
Second one
// initialize multiplier and result outside the loop
$multiplier = 1;
$result = 0;
// loop over the values
foreach ($temp_array as $value) {
// add the value * multiplier to the result
$result += $value * $multiplier;
// switch the multiplier to the alternating value
if ($multiplier == 1) {
$multiplier = 3;
} else {
$multiplier = 1;
}
// The switch can be done more simply using a ternary operator like this:
// $multiplier = $multiplier == 1 ? 3 : 1;
}
for both issues:
$temp_array = array(2,2,2,2,2,2,2,2,2);//sample
function calc_1($temp_array){//first
$total=0;
$count = count($temp_array)+1;
foreach($temp_array as $value){
$total += $count*$value;
$count-=1;
}
return $total;
}
function calc_2($temp_array){//second
$total=0;
foreach($temp_array as $k=>$value){
$total += ($k%2==0) ? 1*$value : 3*$value;//when is even or odd
}
return $total;
}
var_dump(calc_1($temp_array));//resp1
var_dump(calc_2($temp_array));//resp2
If your array is called $myArray, then:
/*Since I can't know what the sequence of the values are that you
are multiplying, and because you might need other sequences in the
future, a function was developed that chooses which sequence you
want to multiply.*/
function findSomeValues($arraySize)
{
switch ($arraySize) {
case 9:
{
$someValues = array(10,9,8,7,4,5,4,3,2);
}
break;
case 12:
{
$someValues = array(1,3,1,3,1,3,1,3,1,3,1,3);
}
break;
default:
$someValues = array();
}
return $someValues;
}
/*This following function then finds how big your array is, looks
for a sequence stored in the findSomeValues function. If a sequence
exist for that array size (in this case if you have an array either
9 or 12 elements long), the result will be calculated and echoed. If
the sequence was not found, an error message would be echoed.*/
function multiplyValues($myArray) {
$result = 0;
$arraySize = count($myArray);//obtaining array size
$someValues = findSomeValues($arraySize);//obtaining sequence to multiply with
if (count($someValues)>0)
{
for($i=0;i<$arraySize;$i++){
$result += $myArray[i]*$someValues[i];
}
echo "result = ".$result."<br>";//result message
}
else
{
echo "you are missing some values<br>";//error message
}
}
Let me know if that worked for you.
Alternative:
If you prefer something a bit simpler:
//this array holds the sequences you have saved:
$sequenceArray = array(
9 => array(10,9,8,7,4,5,4,3,2),
12 => array(1,3,1,3,1,3,1,3,1,3,1,3)
);
//this function does the multiplication:
function multiplyValues($myArray)
{
$arraySize = count($myArray);
for($i=0;i<$arraySize;$i++){
$result += $myArray[i]*$sequenceArray[i];
}
echo "result = ".$result."<br>";//result message
}
For your result
$temp_calc = 10*$temp_array[0]+9*$temp_array[1]+8*$temp_array[2]+7*$temp_array[3]+6*$temp_array[4]+5*$temp_array[5]+4*$temp_array[6]+3*$temp_array[7]+2*$temp_array[8];
You should have for loop as following. It will run the loop till 8th index of your temp_array and multiply each index value with $i and sum up in a variable $temp_calc_1.
<?php
$temp_calc_1 = 0;
for($i=0;$i<9;$i++){
$temp_calc_1 = $temp_calc_1 + ( 10-$i)*$temp_array[$i] ;
}
For your second result
$temp_calc = 1*$temp_array[0]+3*$temp_array[1]+1*$temp_array[2]+3*$temp_array[3]+1*$temp_array[4]+3*$temp_array[5]+1*$temp_array[6]+3*$temp_array[7]+1*$temp_array[8]+3*$temp_array[9]+1*$temp_array[10]+3*$temp_array[11];
The above should be converted to the following loop, this will run loop till your 12th index of temparrayand do the calculation. This time it will multiply each index value of temparray by either 1 and 3. So first time it will multiply with 1 and next time with 3 and so on
//
$temp_calc_2 = 0;
for($i=0;$i<12;$i++){
$j = $i%2?3:1;
$temp_calc_2 = $temp_calc_2 + $j*$temp_array[$i] ;
}
?>
I asked a similar question earlier but I couldn't get a clear answer to my issue. I have a function "isParent" that gets 2 pieces of data. Each 1 of the 2 gets a string separating each value with a , or it just gets a plain int and then checks if the first value given is a parent of the second.
I pull the 2 bits of data in and explode them but when I go through my nested for loop and try to test
$toss = $arr1[$i];
print_r($toss);
It comes up blank. I have no idea what the issue is: Here is the full code of the function...
function isParent($parent, $child)
{
$parentArr = explode(',', $parent);
$childArr = explode(',',$child);
//Explode by Comma here. If array length of EITHER parentArr or childArr > 1 Then throw to an Else
if(count($parentArr) <= 1 && count($childArr) <= 1) //If explode of either is > 1 then ELSE
{
$loop = get_highest_slot(15);
for($i = $loop; $i > 0; $i--)
{
$temp = get_membership_from_slot($i,'id_parent','id_child');
if($temp['id_parent'] == $parent && $temp['id_child'] == $child)
{
return 1;
}
}
}
else //set up a for loop in here so that you traverse each parentArr value and for each iteration check all child values
{
$i = count($parentArr);
$c = count($childArr);
for(;$i >=0;$i--) //Loop through every parent
{
for(;$c >=0;$c--)
{
echo '<br>$i = ';
print_r($i);
echo '<br><br>Parent Arr at $i:';
$toss = $parentArr[$i];
echo $toss;
echo '<br>';
print_r($childArr);
echo '<br><br>';
if(isParent($parentArr[$i],$childArr[$c])) //THIS CAUSES AN INFINITE YES! Learn how to pull an array from slot
{
return 1;
}
}
}
}
return 0;
}
You are missing some code for the slot procedures. Apart from that, you probably need to use a different variable for the inner for loop. because $c will be 0 after the first iteration of $i.
Thanks for the help! The issue was in the recursive call back to the top of the function. It was tossed empty slots and when comparing 2 empty slots it returned a false positive. A quick !empty() check fixed it.
I have a database table with images that I need to display. In my view, I'd like to display UP TO 10 images for each result called up. I have set up an array with the 20 images that are available as a maximum for each result (some results will only have a few images, or even none at all). So I need a loop that tests to see if the array value is empty and if it is, to move onto the next value, until it gets 10 results, or it gets to the end of the array.
What I'm thinking I need to do is build myself a 2nd array out of the results of the test, and then use that array to execute a regular loop to display my images. Something like
<?php
$p=array($img1, $img2.....$img20);
for($i=0; $i<= count($p); $i++) {
if(!empty($i[$p])) {
...code
}
}
?>
How do I tell it to store the array values that aren't empty into a new array?
you could do something like:
$imgs = array(); $imgs_count = 0;
foreach ( $p as $img ) {
if ( !empty($img) ) {
$imgs[] = $img;
$imgs_count++;
}
if ( $imgs_count === 10 ) break;
}
You can simply call array_filter() to get only the non-empty elements from the array. array_filter() can take a callback function to determine what to remove, but in this case empty() will evaluate as FALSE and no callback is needed. Any value that evaluates empty() == TRUE will simply be removed.
$p=array($img1, $img2.....$img20);
$nonempty = array_filter($p);
// $nonempty contains only the non-empty elements.
// Now dow something with the non-empty array:
foreach ($nonempty as $value) {
something();
}
// Or use the first 10 values of $nonempty
// I don't like this solution much....
$i = 0;
foreach ($nonempty as $key=>$value) {
// do something with $nonempty[$key];
$i++;
if ($i >= 10) break;
}
// OR, it could be done with array_values() to make sequential array keys:
// This is a little nicer...
$nonempty = array_values($nonempty);
for ($i = 0; $i<10; $i++) {
// Bail out if we already read to the end...
if (!isset($nonempty[$i]) break;
// do something with $nonempty[$i]
}
$new_array[] = $p[$i];
Will store $p[$i] into the next element of $new_array (a.k.a array_push()).
Have you thought about limiting your results in the sql query?
select * from image where img != '' limit 10
This way you are always given up to 10 results that are not empty.
A ẁhile loop might be what you're looking for http://php.net/manual/en/control-structures.while.php