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POsubstring issue/question
 

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  1. POsubstring issue/question
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    <p>So I have this simple PHP loop that is generating html table data with UPC code numbers (I have 129 total) and the UPC barcode images next to them.</p> <p>The barcode images vs the upc numbers in the SQL is different by the first and last character. So if I have in SQL 123456789, the jpg barcode is listed as 012345678.jpg. So I have to do some substring work where I add a zero character at the beginning and remove the last one.</p> <p>All the images appears except for the very last one, and I can't figure out why this is and why the substring doesn't seem right either.</p> <p>I have the substring working like this in order to remove the last character only:</p> <pre><code>$upcNum = $r[upcNumber]; $imageName = substr($upcNum, 0, -2); </code></pre> <p>I thought it was supposed to be -1, not -2 to just to remove the last character... by using the above substr method, this is what I get...</p> <p>$upcNum = "123456789" substr($upcNum, 0, -2); //12345678</p> <p>anyhow here's my for loop code, hopefully you can help me shed some light on this annoying issue...thanks!</p> <pre><code>$spiceType[0] = "Chiles"; $spiceType[1] = "Teas"; $spiceType[2] = "Botanicals"; $spiceType[3] = "Spices"; $spiceType[4] = "Herbs"; $counter = 1; for($i=0; $i&lt;count($spiceType); $i++){ $result = mysql_query("SELECT * FROM `spices` WHERE `type`='$spiceType[$i]' ORDER BY ID")or die(mysql_error()); $spiceCat = $spiceType[$i]; echo '&lt;tr&gt; &lt;td&gt;&lt;/td&gt;&lt;td&gt;'.$spiceCat.'&lt;/td&gt; &lt;tr&gt;'; while($r=mysql_fetch_array($result)){ $pname = $r[productName]; $qty = $r[qty]; $price = $r[price]; $upcNum = $r[upcNumber]; $imageName = substr($upcNum, 0, -2); $imageName = "0".$imageName.".jpg"; echo' &lt;tr&gt; &lt;td width="10"&gt;'.$counter.'&lt;/td&gt; &lt;td width="200"&gt;'.$pname.'&lt;/td&gt; &lt;td width="20"&gt;&lt;p align="right"&gt;'.$qty.'&lt;/p&gt;&lt;/td&gt; &lt;td width="50"&gt;'.$price.'&lt;/td&gt; &lt;td width="200"&gt;&lt;p align="center"&gt;'.$upcNum.'&lt;/p&gt;&lt;/td&gt; &lt;td&gt;&lt;img src="upcjpeg/'.$imageName.'" height="30%" width="41%"&gt;&lt;/td&gt; &lt;tr&gt;'; $counter++; } } </code></pre>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USAnthony Honciano
    1. USAnthony Honciano
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    1. VO
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      1. POsubstring issue/question
      1. This table or related slice is empty.
      1. VTUpMod
    1. CO`substr($str, 0, -1)` will remove the last character of a string. I'd double-check the url that gets printed for the last image and make sure that an image with that name exists.
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      1. POsubstring issue/question
      1. UStakteek
    2. COIt does exist, and I know it will appear too. Because when I switch the sbustr from -2 to -1, then all 128 upc's will not appear, except for that last one...
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      1. POsubstring issue/question
      1. USAnthony Honciano
    3. COSo it has a different name.
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      1. POsubstring issue/question
      1. USKaroly Horvath
 

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