How can I store this in a $_var variable ?
$s_number = 5;
$spn = '6';
echo "'Landscapes':[";
for ($i = 1; $i <= $s_number; $i++)
{
echo "'".$spn."/"."content"."/".$i.".png"."'".", ";
}
echo "]";
Question is bit vague though it seems probably you are looking for this,
$string = "'Landscapes':[";
for ($i = 1; $i <= $s_number; $i++) {
$string .= "'".$spn."/"."content"."/".$i.".png"."'".", ";
}
$string .= "]";
echo $string;
Other suggestions that use strings are fine, but I prefer to create arrays for tasks like this:
$s_number = 5;
$spn = '6';
$landscapes_array = array();
for ($i = 1; $i <= $s_number; $i++) {
$landscapes_array[] = "'".$spn."/"."content"."/".$i.".png"."'".", ";
}
$landscapes = "'Landscapes':[" . implode('', $landscapes_array) . "]";
You could also try putting the for loop in a function passing your variables and then return the values to a new variable. That's like saving a loop in a variable.
Related
I am in too much trouble. I need below type of array:-
$val = "abc";
$arr1["besk"] = $val
$arr2["besk"] = $val
.
.
$arr15["besk"] = $val
I tried below:-
for($i = 1; $i<16; $i++)
{
$arr.$i["besk"] = $val
}
here I've $val. so not to worry on that. But array is not properly creating. Any help would be appreciated.
first define the array as string
like
$arr = 'arr';
then use the foreach
like
for($i = 1; $i<16; $i++)
{
${$arr.$i}["besk"] = $val;
}
You need to use variable variables (not recommended)
for($i = 1; $i<16; $i++)
{
${"arr".$i}["besk"] = $val
}
EDIT : #CBroe is right about his comment, you should use an array instead. So the best solution would be to create a two dimensional array like so :
$arr = [];
for($i = 0; $i<15; $i++)
{
$arr[$i]["besk"] = $val
}
The only difference is your array indexes start from 0 now and if you want to have the third value of your array you need this command $arr[2]["besk"]
it is very simple use this:
for($i = 1; $i<16; $i++)
{
${$arr.$i}["besk"] = $val
}
Use this approach:
for($i = 1; $i<16; $i++)
{
${$arr.$i}["besk"] = $val;
}
add new variable
$val = "abc";
$arrName = "arr"; //this one
$arr1["besk"] = $val
$arr2["besk"] = $val
.
.
$arr15["besk"] = $val
and to call it
for($i = 1; $i<16; $i++)
{
${$arrName.$i}["besk"] = $val
}
ps. you did not create array, you just create 15 array variable with 1 index("besk" index)
I was wondering if it is possible to create unique variables in a for loop using PHP. I tried the following code but it didn't work:
$level_count = 6
for ($i=1; $i<=$level_count; $i++) {
$level_ + $i = array();
}
I would like to end up with the variables $level_1, $level_2, $level_3, $level_4, $level_5 and $level_6. How would I achieve this?
$level_count = 6
for ($i=1; $i<=$level_count; $i++) {
$l = "level" . $i;
$$l = array();
}
But Zerkms is right...
$arr = array(array(),array(),array(),array(),array(),array());
It's much easier if you use arrays for this. Try this one-liner:
$level_count = 6;
$array = array_fill_keys(array_map(function($index) {
return 'level_' . $index;
}, range(1, $level_count)), array());
var_dump($array);
Weird thing (I have no idea why you want to use it), but, just for educational purposes...
$level_count = 6;
for ($i = 1; $i <= $level_count; $i++) {
$name = 'level_' . $i;
$$name = array();
}
I'm try to print an array where every other value is reassigned, as examples (from this):
17.34502870451717,62.46137370987033
To this:
62.46137370987033,17.34502870451717
That part have I succeeded with, but now I have this structure:
[62.46137370987033,[17.34501402936927,]
[62.46123453616544,[17.34525377433593,]
[62.4610178881864,[17.34546663705899,]
This is where I get stuck and do not know how to write.
The structure I want looks like this:
[62.392628, 17.309413],
[62.393162, 17.309193],
[62.393403, 17.30922]
Here is my explode.php (GIST)
<?php
$dwarf = "17.34502870451717,62.46137370987033,17.34501402936927,62.46123453616544";
$minion = explode(",",$dwarf);
$wing = "[";
for ($i = 0;$i < count($minion) -1; $i++) {
echo $wing . $minion[$i+1].",";
if($i%2==1) { echo "]<br />"; }
} echo $minion[0] . $wing;
?>
As I understand it, as long as there's always even pairs it should be as easy as;
<?php
$dwarf = "17.34502870451717,62.46137370987033,17.34501402936927,62.46123453616544";
$minion = explode(",",$dwarf);
$eol = '';
for ($i = 0;$i < count($minion) -1; $i+=2) {
echo $eol.'['.$minion[$i+1].','.$minion[$i]."]";
$eol=',<br/>';
}
echo '<br/>';
>>> [62.46137370987033,17.34502870451717],
>>> [62.46123453616544,17.34501402936927]
Try This
$dwarf = "17.34502870451717,62.46137370987033,17.34501402936927,62.46123453616544";
$minion = explode(",",$dwarf);
$wing = "[";
for ($i = 0;$i < count($minion) -1; $i+=2)
{
echo $kk = $wing . $minion[$i+1].",".$minion[$i]."],<br>";
}
Just a small modification to the given answers
$dwarf = "17.34502870451717,62.46137370987033,17.34501402936927,62.46123453616544";
$minion = explode(",",$dwarf);
$str = '';
for ($i = 0;$i < count($minion) -1; $i+=2) {
$str.='['.$minion[$i+1].','.$minion[$i].'],<br/>';
}
echo rtrim($str,','); // to trim ',' at the end
I have some data, which i currently have hard coded, basically i am trying to split the numbers, 1-port and recreate it as
'INSERT INTO '.$tbl_name.'(PortNumber) VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(145),(146),(147),(148),(149),(150),(151),(152),(153),(154),(155),(156)';
and etc.. i have a pretty good start i think..
PHP
//post vars
$port = 24; //(int)$_POST['ports'];
$super = 2; //(int)$_POST['super'];
$col = 12; //(int)$_POST['columns'];
$row = 2; //(int)$_POST['rows'];
//rest of vars
$halfPort=$port/2;//12
$colHalf = $col / $super;//6
$half=$colHalf-1;//5
$count=1;
$and=1;
$one=1;
echo "<h1>here goes nothen</h1><br><br>";
//sperate port
$finalArray = array();
for ($i = $port; $i >= 1; $i -= $colHalf) {
$tempArray = array();
for ($j = 0; $j < $colHalf; $j++) {
$tempArray[] = $i - $j;
}
$tempArray[]= sort($tempArray);
$finalArray[] = implode(",", $tempArray);
}
$finalArray = array_reverse($finalArray);
echo "<pre>" . print_r($finalArray, true) . "</pre>";
echo "<br><br>";
//sql for insert
$sqlinsert='
INSERT INTO '.$tbl_name2.'
(PortNumber) VALUES ';
$start='(';
$end=')';
//preset b
$b=0;
for($c = $port; $c >= 1; $c -= $colHalf) {
$queryStart = array();
$queryStart[]=explode(',',$finalArray[$b]);
echo "<pre>" ."start". print_r($queryStart, true) . "</pre>";
for($s=0; $s<6; $s+=$and) {
$queryEnd = array();
$queryEnd[] = $start.$queryStart[$s].$end;
echo "<pre>" ."end". print_r($queryEnd, true) . "</pre>";
}
$b+=1;
}
to view it live insert it here: http://phptester.net/index.php?lang=en
baisaclly it gets to $queryEnd, everything goes down hill, any ideas?
I'm not quite sure what you want to do, but if you just want to build something like the INSERT query you can do something like:
$tbl_name = '?';
echo 'INSERT INTO '.$tbl_name.'(PortNumber) VALUES ('.implode('),(', array_merge(range(1,12),range(145,156))).')';
I think I see it. You are reinitializing your $queryEnd array every time the For loop runs. Move that out of the For loop.
Mike
I need a way to do this
for($i=1;$i<=10;$i++){
$id$i = "example" . $i;
}
notice the second line has $id$i
so for the first loop $id1 will equal example1
in the second loop $id2 will equal example2
and so on...
Thank you very much!
You can use variable variable names to do this; however, it's probably much more convenient if you just used an array:
for($i = 1, $i <= 10, $i++) {
$id[] = "example" . $i;
}
You can convert a string into a variable (the name of the variable), if you put another $ in front of it:
$str = "number";
$number = 5;
$$str = 8;
echo $number; // will output 8
So in your example, you could do it like that:
for($i = 1; $i <= 10; $i++) {
$str_var = "id".$i;
$$str_var = "example".$i;
}
It would be much better to use an array, but you could do this:
for($i=1; $i<=10; $i++){
$var ="id$i";
$$var = "example" . $i;
}
Here's what I would recommend doing instead:
$ids = array;
for($i = 1; $i <= 10; $i++) {
$ids[$i] = "example" . $i;
}
You could create an array of size $i with a name of $id, and insert each element into a different index.
for($i=1;$i<=10;$i++){
$id[$i] = "example" . $i;
}
$var = array();
for($i=1; $i<=10; $i++) {
$var['id' . $i] = 'example' . $i;
}
extract($var, EXTR_SKIP);
unset($var);
but why not use a simple array?