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Converting text to numbers


crazy_jayne

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Hello

 

I hope someone can help me

 

I am really struggling with PHP and don't quite understand what I am doing, so please bear with me

 

I am trying to display a message if the result is greater than 12

 

Please see my attempts below

 

//$BoxTotal =  "{qty{$row[$heading_column]}}"; // doens't seem to let me write it without the "" and is now text

$BoxTotal +=  "{qty{$row[$heading_column]}}"; // += trying to convert it to number - still string

$BoxTotal += $BoxTotal; // += trying to convert it to number - still string

if ($BoxTotal >= 12) { // picks up 15 if it is a string - not the number

$warning = "warning only 12 bottles per box please " . $BoxTotal ;

}

 

I only seem to be able to get $BoxTotal if I enclose it in quotation marks, which, I think is turning it into text

I scoured the Internet and found that perhaps += might convert it back into a number but this doesn't seem to work

 

I expect its really simple when you know how

 

If if helps to see the whole thing I have attached a pdf file, the bit I am looking at is at line 415 (commented out at the moment)

 

Any help really appreciated

 

Cheers

Jayne  :confused:

 

 

 

 

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The following code might help you if it does the post is solved  ;):

 

<html>

<head>

<script>

 

function calculate( length, width,height)

{

  var x = length.value; 

  var y = width.value;

var z = height.value

 

var t=  parseInt(x)+parseInt(y);

 

  if (x==900)

  alert(x);

  else

alert(y);

 

document.frm.textfield.value = t*z;

}

</script>

</head>

<body>

 

<form name="frm">

<table>

<tr>

<td>Length</td>

<td><input name="len" type="text" /></td>

</tr>

 

<tr>

<td>Width</td>

<td><input name="wid" type="text" /></td>

</tr>

<tr>

  <td>Height</td>

  <td>

    <input name="hit" type="text" id="hit" />

  </td>

</tr>

<tr>

  <td>Result</td>

  <td><input type="text" name="textfield" id="textfield"></td>

</tr>

<tr>

  <td> </td>

  <td><input type="button" name="Submit" value="Submit" onClick="calculate(document.frm.len, document.frm.wid, document.frm.hit)"

 

/></td>

</tr>

</table>

</form>

 

</body>

</html>

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Thanks guys but I am still drowning

 

The first two seem to work independently but not when I try put them in my code.

The third, I think I understand the idea, but I can't integrate it so it doesn't much everything else up.

The fourth one looks like the sort of thing I was looking for but the qty part of the equation is missing

 

Is my code fundamentally flawed?

 

Cheer

Jayne

 

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