Re: [PHP] Re: echo?

[Richard Quadling]

On 23 March 2011 07:46, Geoff Lane <ge...@gjctech.co.uk> wrote:
> Hi Jim,
>
> On Wednesday, March 23, 2011, 1:42:18 AM, you wrote:
>
>> ok - here's the code in question.
>> $q = 'select * from director_records ';
>> $qrslt = mysql_query($q);
>> $rows = mysql_num_rows($qrslt);
>> for ($i=0; $i<$rows; $i++)
>>     {
>>     $j = $i+1;
>>     $row = mysql_fetch_array($qrslt);
>>     echo $j.'-'.$row['userid'];
>>     if ($row['user_priv']<> "")
>>         echo ' ('.$row['user_priv'].')&#13&#10';
>>     else
>>         echo '&#13&#10';
>>     }
>
>
>> The output I get is:
>
>
>> 1-smith5
>> f-ginerjm (M)
>> g-smith8
>
>> While the alpha parts are valid, the index is only correct for the first one
>> (0) obviously.
>
>
> I couldn't understand why you're getting characters, so I thought I'd
> have a go myself. First, some DDL and DML to recreate your data:
>
>  create table director_records (userid char(16), user_priv char(8));
>  insert into director_records (userid, user_priv) values ('smith5', 
> ''),('ginerjm','M'),('smith8','');
>
> Now when I ran your code I got:
>
> 1-smith5&#13&#102-ginerjm (M)&#13&#103-smith8&#13&#10
>
> That is, all but the first result has &#10x in front of it. These are
> HTML entities that display as characters and it so happens that &#102
> is 'j' and &#103 is 'g'. Strictly, these entities should be terminated
> with a semi-colon (i.e. &#102; and &#103;), but your browser is
> 'obligingly' making sense of the 'bad formatting' and  this is why
> you're getting characters.
>
> BTW, an alternative to your for construct would be to use a while loop
> to iterate through a data table. e.g. in your case, I'd have used:
>
>  $q = 'select * from director_records ';
>  $qrslt = mysql_query($q);
>  $i = 1;
>  while ($row = mysql_fetch_array($qrslt)){
>      echo $i++ . '-' . $row['userid'];
>      if ($row['user_priv']<>""){
>          echo " (" . $row['user_priv'] . ")";
>      }
>      echo "<br>\n";
>  }
>
> HTH,

I use ...

while(False !== ($row = mysql_fetch_array($qrslt)){
}

just so that if I have a query with 1 cell which is 0, or '', I don't
abort the loop.


-- 
Richard Quadling
Twitter : EE : Zend
@RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY

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