php使用rowspan生成的表

Question

I am using this code to generate a table which will subsequently be modified to upload data to a mysql database.

<?php
$start_loc_number= 1 ;
$start_loc_alpha= 'A' ;
$end_loc_number= 10 ;
$end_loc_alpha= 'J' ;

$out = ''; 

   $out .= '<table border = 1 bordercolor="#FF0000">';

    for($tr='A';$tr<=$end_loc_alpha;$tr++)
    { $out .= "<tr>";
        for($td=1;$td<=$end_loc_number;$td++)
        { $out .= '<td BGCOLOR="#99CCFF">'.$tr.$td.'</td>

                                 <td id="sampleID" contenteditable="true">  sampleID</td>
                                 <td id="volume" contenteditable="true">  volume</td>'  ;
        }
    $out .= "</tr>";
    }

    $out .= "</table>";

echo $out; 
?>

At the moment the table generates 3 cells per iteration in 3 column cells,

| coordinates | sample ID | volume |

My question relates to how the php code can be altered so to generate a table where the coordinates cell can be arranged as a rowspan over the sampleID and volume cells positioned in 2 rows with the sample ID over the volume cell

|             | sample ID
| coordinates |------------
|             | volume

Answer 1

try this,

for($tr='A';$tr<=$end_loc_alpha;$tr++)
    { $out .= "<tr>";
        for($td=1;$td<=$end_loc_number;$td++)
        { $out .= '<td BGCOLOR="#99CCFF">'.$tr.$td.'</td><td>
                                <table><tr style="border-bottom: 1px solid red">
                                 <td id="sampleID" contenteditable="true">  sampleID</td></tr>
                                <tr> <td id="volume" contenteditable="true">  volume</td></tr></table></td>'  ;
        }
    $out .= "</tr>";
    }