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leanrning me some PHP logics


cainchild

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Sigh. I am learning PHP, started today. So, pursuant to becoming more comfortable with this as a language I started on one a little echo tutorial I found somewhere and expanded it to this code. My issue is that it's only going through $main_loop one time, thus rendering the table a single time, rather than the expected 3 time. Somewhere my while{} is falling apart. It still runs and does its thing, but only the one time. The comments are for my own sake.

<?php

$main_loop = 0;
$column_loop = 0;
$row_loop = 0;
$column_loop = 0;
/* do it all this way until you get comfortable with this var system */
$table_start = "<table BORDER = 1> ";	
$table_end = "</table> ";
$table_row_start = "<tr>";
$table_row_end = "</tr>";
$table_d_start = "<td>";
$table_d_end = "</td>";


echo "<html><head></head><body>";
/* Begins writing the table(s)*/
while($main_loop != 4) /* writes entire table 4 times */
{ /* ------------------------------------------while main loop-------------------------------*/
echo $table_start; /* code block to render a table */
while($row_loop !=  /* specifies teh number of rows -1 */ 
{ /*-------------------while row loop-----------------------*/
	echo $table_row_start;
	while($column_loop !=  /* specifies the number of <td> per row -1 */
	{/*----------------while column loop ---------------------------*/
		if ($row_loop == 0) /* part one of checking to see if we are at row 0 col 0 */
		{
			if($column_loop == 0) /* part two of checking to see if row 0 col */ 
			{
			echo $table_d_start;
		    echo "  "; /* if row == 0 and col == 0 leave a blank box */
		    echo $table_d_end;
		    $column_loop++;
			}
			else
			{
			  echo $table_d_start;
			  if($row_loop == 0)
				   {
					$row_num = $row_loop + 1; /* if the row is 0 set it to one to prevent 0's everywhere */
					}   
					else 
					{
						$row_num = $row_loop; 
					}

				if($column_loop == 0)
				   {
					$col_num = $column_loop + 1; 
					} 	
					else
					{
						$col_num = $column_loop;
					}
		        echo $row_num * $col_num; /* multiply row x col */
		        echo $table_d_end;
		        $column_loop++;
		       
			}
		}
		else
		{
		        if($row_loop == 0)
				   {
					$row_num = $row_loop + 1; 
					}   
					else 
					{
						$row_num = $row_loop;
					}
				if($column_loop == 0)
				   {
					$col_num = $column_loop + 1; 
					} 	
					else
					{
						$col_num = $column_loop;
					}
		echo $table_d_start;
		echo $row_num * $col_num;
		echo $table_d_end;
		$column_loop++;
		}

	}/*----------------while column loop ---------------------------*/
	echo $table_row_end;
	$column_loop = 0;
	$row_loop++;
}/*-------------------while row loop-----------------------*/
echo $table_end;
echo "<BR>";
$main_loop++;

} /* ------------------------------------------while main loop-------------------------------*/
echo "</body></html>";
?>


Sorry I've been drupal alot lately.

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