在1个html表单元中打印整个PHP数组

Question

so I'm trying to get my PHP array to print an entire array within one td, so I want the table to look like this:

First  ---  Last  ---  Values  
John   --  Smith  --  1,2,4,6 

$comp_labs holds the values (1,2,4,6 for example)

Here's the code I've got at the moment:

echo "<tr>";
echo "
<td> ".$firstName."</td>
<td> ".$lastName."</td>
<td> ".$comp_labs."</td>
</tr>\n";
echo "</table>";

it's printing the name fine but only the last element of the array. I tried looping through just that td printing array[i] like so:

echo "<tr>";
echo "
<td> ".$firstName."</td>
<td> ".$lastName."</td>
<td> "for($i=0; $i < count($comp_labs); $i++){.$comp_labs[i].}"</td>
</tr>\n";
echo "</table>";

but it didn't like that. However if I just Echo out the $comp_labs array outside of the table it prints the entire array fine, which I find a little confusing. I've had a look online but every forum I've come across has been people trying to loop through and print 1 value per t d, not all values in one td .

If anyone is able to help out here I would greatly appreciate it, thanks in advance!

Answer 1

You need implode()

 <td> ".implode(",", $comp_labs )."</td>

So it becomes :

echo "<tr>
              <td> ".$firstName."</td>
              <td> ".$lastName."</td>
              <td> ".implode(",", $comp_labs)."</td>
     </tr>\n";

Answer 2

放大数组，将其转换为字符串。

$comp  = implode(", ",$comp_labs);