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Help in for loop….

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Feb 26.2006

How come I cant do this? Please help….

[code=php]
for ($m=0; $m < $option; $m++)
{
for($i=$m; $i<$d; $i=($m + $option))
{
if ($value[$i] == $value1[$k])
{
$match = $match + 1;
$k++;
}
else
{
$k++;
}
}
echo $match;
}
[/code]

The problem lies with the for loop saying $i=$m. How come I cant do this?

to post a comment
PHP

7 Comments(s) ↴

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@NogDogFeb 26.2006 — What is the code supposed to do? What is it not doing, or what error is being generated, which causes you to say it's not working and that the problem is with the $i=$m ?
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@dannyjoyauthorFeb 26.2006 — i've tried it without the $i = $m and it works....the $i = $m is to make it loop for another specified number of times.

when i put $i = $m, the loop doesnt end
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@dannyjoyauthorFeb 26.2006 — actually it was only

for($i=0; $i<$d; $i=($i + $option))

{

if ($value[$i] == $value1[$k])

{

$match = $match + 1;

$k++;

}

else

{

$k++;

}

}

echo $match;

and this works....but because I want to make this whole loop to loop for another specified number of times , that's why I put in the other for loop....
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@NogDogFeb 26.2006 — You've got 7 variables and 2 arrays in the mix here. Without knowing the values of each, how can we analyze what's going on? This following works fine, but I had to initialize many of the variables and the arrays:
[code=php]
<?php
$option = 5;
$value = array (1,2,3,4,5,6,7,8);
$value1 = array (1,2,3,4,5,6,7,8);
$k = 0;
$match = "0";
$d = 5;
for ($m=0; $m < $option; $m++)
{
for($i=$m; $i<$d; $i=($m + $option))
{
if ($value[$i] == $value1[$k])
{
$match = $match + 1;
$k++;
}
else
{
$k++;
}
}
echo $match;
}
?>
[/code]
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@Mester_PedizFeb 26.2006 — You really need to post the whole script!
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@dannyjoyauthorFeb 26.2006 — [code=php]
$criteria = 5;
$option = 4;
$d = ($criteria * $option);
$match = 0;
$k=0;
$value = array(1,2,3,4,2,3,4,1,2,3,4,3,2,3,4,1,3,3,2,1)
$value1 = array(1,2,3,2,3)

for ($m=0; $m < $option; $m++)
{
for($i = $m; $i < $d; $i = ($m + $option))
{
if ($value[$i] == $value1[$k])
{
$match = $match + 1;
$k++;
}
else
{
$k++;
}
}
echo $match;
}
[/code]

I'm supposed to compare only certain values of array value with the value of array value1 and if they are equal, increase the match...which is just a counter to keep count...

It still doesnt work....
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@NogDogFeb 26.2006 — This is an infinite loop:
[code=php]
for($i = $m; $i < $d; $i = ($m + $option))
[/code]
I think maybe what you want is:
[code=php]
for($i = $m; $i < $d; $i += ($m + $option)) // += instead of =
[/code]
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