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[SOLVED] Nested Looping

Deadman2

By Deadman2
in PHP Coding Help

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Deadman2 Newbie

Deadman2

Posted
Posted

Right so ive been developing a template engine for awhile now and its turned into one massive class and ive hit a snag on it.

 

This snippet of code is supposed to compile a nested loop block, its working but theres a small snag...

 

Its supposed to output:

General
new.gif General Chat 1 0
new.gif Introductions 1 0

Tutorials
new.gif PHP Tutorials 1 0

 

But insted it is outputting:

General
new.gif General Chat 1 0
new.gif Introductions 1 0

Tutorials
new.gif General Chat 1 0
new.gif Introductions 1 0
new.gif PHP Tutorials 1 0

 

Its running off a multi-dim array that currently outputs to:

Array ( 
[1] => Array ( 
	[icon] => new.gif 
	[title] => General Chat 
) 

[2] => Array ( 
	[icon] => new.gif 
	[title] => Introductions 
) 
) 

Array ( 
[1] => Array ( 
	[icon] => new.gif 
	[title] => PHP Tutorials 
) 
)

 

As you probably noticed it looks all correct so im guessing it is a problem within the code itself and here is a snippet of it:

$this->current_nested_loop_block = $this->generate_block_ref_data( $variable_name_2, array( " BEGIN ", " END " ), "loop", $rough_loop );

foreach ( $variable_content_2 as $variable_name_nested => $variable_content_nested )
{									
$rough_nested_loop = $this->current_nested_loop_block[2];									

foreach ( $variable_content_nested as $variable_name_nested_2 => $variable_content_nested_2 )
{
	$rough_nested_loop = str_replace( $this->replacement_variable_prefix . $variable_name_2 . "." . $variable_name_nested_2 . $this->replacement_variable_suffix, $variable_content_nested_2, $rough_nested_loop );
}	

$parsed_nested_loop .= rtrim( $rough_nested_loop );
}

$this->current_nested_loop_block[3] = $parsed_nested_loop;
$rough_loop = str_replace( $this->replacement_loop_prefix . " BEGIN " . $variable_name_2 . $this->replacement_loop_suffix . substr( $rough_loop, $this->current_nested_loop_block[0], $this->current_nested_loop_block[1] ) . $this->replacement_loop_prefix . " END " . $variable_name_2 . $this->replacement_loop_suffix, $this->current_nested_loop_block[3], $rough_loop ); 	
$this->current_nested_loop_block = array( );

 

Basically it first captures the cat_row looping tags: <!-- BEGIN cat_row --> and <!-- END cat_row --> then writes the contents of whats between the tags to a variable named current_nested_loop_block, then it is supposed to loop each row array ( [1] => Array  ) etc, then its supposed to loop through each tag ( [icon] and [title] ) etc, and replace each {cat_row.tag} with the appropriate data.

 

So for each of the rows it searches for:

	<!-- BEGIN cat_row -->
<tr>
	<td><img src="{img_base_dir}icon_{cat_row.icon}" alt="{cat_row.icon}" /></td>
	<td>{cat_row.title}</td>
	<td>{cat_row.topic_count}</td>
	<td>{cat_row.reply_count}</td>
</tr>
<!-- END cat_row -->

 

And replaces it with the correct data and its supposed to do that for each of the rows.

 

Sooo anyone see the problem?!

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Deadman2 Newbie

Deadman2

Posted
  • Author
Posted

Here is the looping function:

	
<?php
function loop_replace( $loop, $vars = array( ), $error_line, $error_file )
{
	if ( $this->has_error == true )
	{
		return;
	}
	else if ( $this->has_error == false )
	{    
		$this->current_loop_block = $this->generate_block_ref_data( $loop, array( " BEGIN ", " END " ), "loop" );

		foreach ( $vars as $variable_name => $variable_content )
		{
			if ( is_numeric( $variable_name ) && is_array( $variable_content ) )
			{
				$rough_loop = $this->current_loop_block[2];

				if ( is_array( $variable_content ) )
				{
					foreach( $variable_content as $variable_name_2 => $variable_content_2 )
					{
						if ( !is_array( $variable_content_2 ) )
						{
							/**
								Associative Array Loops

								array(
									"title" => "Board Name"
								)
							**/

							$rough_loop = str_replace( $this->replacement_variable_prefix . $loop . "." . $variable_name_2 . $this->replacement_variable_suffix, $variable_content_2, $rough_loop );
						}
						else if ( is_array( $variable_content_2 ) )
						{					
							/**
								Nested Array Loops

								array(
									"title" => "Name",
									"nested_loop" => array(
										"title" => "Sub Name"
									)
								)
							**/			

							$this->current_nested_loop_block = $this->generate_block_ref_data( $variable_name_2, array( " BEGIN ", " END " ), "loop", $rough_loop );

							foreach ( $variable_content_2 as $variable_name_nested => $variable_content_nested )
							{									
								$rough_nested_loop = $this->current_nested_loop_block[2];									

								foreach ( $variable_content_nested as $variable_name_nested_2 => $variable_content_nested_2 )
								{
									$rough_nested_loop = str_replace( $this->replacement_variable_prefix . $variable_name_2 . "." . $variable_name_nested_2 . $this->replacement_variable_suffix, $variable_content_nested_2, $rough_nested_loop );
								}

								$parsed_nested_loop .= rtrim( $rough_nested_loop );									
							}

							$this->current_nested_loop_block[3] = $parsed_nested_loop;
							$rough_loop = str_replace( $this->replacement_loop_prefix . " BEGIN " . $variable_name_2 . $this->replacement_loop_suffix . substr( $rough_loop, $this->current_nested_loop_block[0], $this->current_nested_loop_block[1] ) . $this->replacement_loop_prefix . " END " . $variable_name_2 . $this->replacement_loop_suffix, $this->current_nested_loop_block[3], $rough_loop ); 	
							$this->current_nested_loop_block = array( );								
						}	
					}
				}					
			}

			$parsed_loop .= rtrim( $rough_loop );
		}

		$this->current_loop_block[3] = $parsed_loop;
		$this->current_template_html = str_replace( $this->replacement_loop_prefix . " BEGIN " . $loop . $this->replacement_loop_suffix . substr( $this->current_template_html, $this->current_loop_block[0], $this->current_loop_block[1] ) . $this->replacement_loop_prefix . " END " . $loop . $this->replacement_loop_suffix, $this->current_loop_block[3], $this->current_template_html ); 
		$this->current_loop_block = array( );
	}
} 
?>

 

And here is the generate_block_ref_data function:

<?php
function generate_block_ref_data( $name, $tag, $type, $content = "" )
{
	$tag_start = ( $type == "loop" ) ? $this->replacement_loop_prefix . $tag[0] . $name . $this->replacement_loop_suffix : $this->replacement_variable_prefix . $tag[0] . $name . $this->replacement_variable_suffix;
	$tag_end = ( $type == "loop" ) ? $this->replacement_loop_prefix . $tag[1] . $name . $this->replacement_loop_suffix : $this->replacement_variable_prefix . $tag[1] . $name . $this->replacement_variable_suffix;

	$tag_start_pos = ( $content != null ) ? strpos( $content, $tag_start ) + strlen( $tag_start ) : strpos( $this->current_template_html, $tag_start ) + strlen( $tag_start );
	$tag_end_pos = ( $content != null ) ? strpos( $content, $tag_end ) : strpos( $this->current_template_html, $tag_end );			
	$tag_length = $tag_end_pos - $tag_start_pos;	

	return array(
		0 => $tag_start_pos, 
		1 => $tag_length, 
		2 => ( $content != null ) ? substr( $content, $tag_start_pos, $tag_length ) : substr( $this->current_template_html, $tag_start_pos, $tag_length ),	
		3 => ""
	);	
}
?>

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Deadman2 Newbie

Deadman2

Posted
  • Author
Posted

Alright I have made a few new changes to the function:

 

<?php
function loop_replace( $loop, $vars = array( ), $error_line, $error_file )
{
	if ( $this->has_error == true )
	{
		return;
	}
	else if ( $this->has_error == false )
	{    
		$this->current_loop_block = $this->generate_block_ref_data( $loop, array( " BEGIN ", " END " ), "loop" );

		foreach ( $vars as $variable_name => $variable_content )
		{
			if ( is_numeric( $variable_name ) && is_array( $variable_content ) )
			{
				$rough_loop = $this->current_loop_block[2];

				if ( is_array( $variable_content ) )
				{
					foreach( $variable_content as $variable_name_2 => $variable_content_2 )
					{
						if ( !is_array( $variable_content_2 ) )
						{
							/**
								Associative Array Loops

								array(
									"title" => "Board Name"
								)
							**/

							$rough_loop = str_replace( $this->replacement_variable_prefix . $loop . "." . $variable_name_2 . $this->replacement_variable_suffix, $variable_content_2, $rough_loop );
						}
						else if ( is_array( $variable_content_2 ) )
						{					
							/**
								Nested Array Loops

								array(
									"title" => "Name",
									"nested_loop" => array(
										"title" => "Sub Name"
									)
								)

							$this->current_nested_loop_block = $this->generate_block_ref_data( $variable_name_2, array( " BEGIN ", " END " ), "loop", $rough_loop );

							foreach ( $variable_content_2 as $variable_name_nested => $variable_content_nested )
							{									
								$rough_nested_loop = $this->current_nested_loop_block[2];									

								foreach ( $variable_content_nested as $variable_name_nested_2 => $variable_content_nested_2 )
								{
									$rough_nested_loop = str_replace( $this->replacement_variable_prefix . $variable_name_2 . "." . $variable_name_nested_2 . $this->replacement_variable_suffix, $variable_content_nested_2, $rough_nested_loop );
								}

								$parsed_nested_loop .= @rtrim( $rough_nested_loop );	
								$rough_nested_loop = "";																
							}

							$this->current_nested_loop_block[3] = $parsed_nested_loop;
							$rough_loop = str_replace( $this->replacement_loop_prefix . " BEGIN " . $variable_name_2 . $this->replacement_loop_suffix . substr( $rough_loop, $this->current_nested_loop_block[0], $this->current_nested_loop_block[1] ) . $this->replacement_loop_prefix . " END " . $variable_name_2 . $this->replacement_loop_suffix, $this->current_nested_loop_block[3], $rough_loop ); 	
							$this->current_nested_loop_block = array( );
							*/

							$this->current_nested_loop_block = $this->generate_block_ref_data( $variable_name_2, array( " BEGIN ", " END " ), "loop", $rough_loop );

							foreach ( $variable_content_2 as $variable_name_nested => $variable_content_nested )
							{
								if ( is_numeric( $variable_name_nested ) && is_array( $variable_content_nested ) )
								{
									$rough_nested_loop = $this->current_nested_loop_block[2];

									if ( is_array( $variable_content_nested ) )
									{
										foreach( $variable_content_nested as $variable_name_nested_2 => $variable_content_nested_2 )
										{
											$rough_nested_loop = str_replace( $this->replacement_variable_prefix . $variable_name_2 . "." . $variable_name_nested_2 . $this->replacement_variable_suffix, $variable_content_nested_2, $rough_nested_loop );
										}
									}

									$parsed_nested_loop .= @rtrim( $rough_nested_loop );
									$rough_nested_loop = "";
								}

								$this->current_nested_loop_block[3] = $parsed_nested_loop;
								$rough_loop = str_replace( $this->replacement_loop_prefix . " BEGIN " . $variable_name_2 . $this->replacement_loop_suffix . substr( $rough_loop, $this->current_nested_loop_block[0], $this->current_nested_loop_block[1] ) . $this->replacement_loop_prefix . " END " . $variable_name_2 . $this->replacement_loop_suffix, $this->current_nested_loop_block[3], $rough_loop ); 	
								$this->current_nested_loop_block = array( );
							}								
							// End Nested Looping....
						}	
					}
				}					
			}

			$parsed_loop .= rtrim( $rough_loop );
		}

		$this->current_loop_block[3] = $parsed_loop;
		$this->current_template_html = str_replace( $this->replacement_loop_prefix . " BEGIN " . $loop . $this->replacement_loop_suffix . substr( $this->current_template_html, $this->current_loop_block[0], $this->current_loop_block[1] ) . $this->replacement_loop_prefix . " END " . $loop . $this->replacement_loop_suffix, $this->current_loop_block[3], $this->current_template_html ); 
		$this->current_loop_block = array( );
	}
} 
?>

 

Now its outputting:

General
new.gif 	General Chat 	1 	0
Tutorials
new.gif 	General Chat 	1 	0
new.gif 	PHP Tutorials 	1 	0

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Deadman2 Newbie

Deadman2

Posted
  • Author
Posted

Argh im getting so close to getting this damn thing working, there is where i stand right now. This is the current output:

General
new.gif 	General Chat 	1 	0 	Kurt

Tutorials
nonew.gif 	PHP Tutorials 	1 	0 	Kurt

Help
nonew.gif 	No Subboards Defined! 	0 	0 	N/A

Show Off
nonew.gif 	No Subboards Defined! 	0 	0 	N/A

 

Seems alright... only thing is that General should have a 2nd subboard under it called Introductions....

General
new.gif 	General Chat 	1 	0 	Kurt
nonew.gif 	Intros 	1 	0 	Kurt

Tutorials
nonew.gif 	PHP Tutorials 	1 	0 	Kurt

Help
nonew.gif 	No Subboards Defined! 	0 	0 	N/A

Show Off
nonew.gif 	No Subboards Defined! 	0 	0 	N/A

 

Thats what it should be displaying but its not...

I am creating a multi-dim array based off of database output and this is the array that is being created:

Array
(
[1] => Array
	(
		[title] => General
		[cat_row] => Array
			(
				[1] => Array
					(
						[icon] => new.gif
						[title] => General Chat
						[topic_count] => 1
						[reply_count] => 0
						[last_poster] => Kurt
					)

				[2] => Array
					(
						[icon] => nonew.gif
						[title] => Introductions
						[topic_count] => 1
						[reply_count] => 0
						[last_poster] => Kurt
					)

			)

	)

[2] => Array
	(
		[title] => Tutorials
		[cat_row] => Array
			(
				[1] => Array
					(
						[icon] => nonew.gif
						[title] => PHP Tutorials
						[topic_count] => 1
						[reply_count] => 0
						[last_poster] => Kurt
					)

			)

	)

[3] => Array
	(
		[title] => Help
		[cat_row] => Array
			(
				[2] => Array
					(
						[icon] => nonew.gif
						[title] => No Subboards Defined!
						[topic_count] => 0
						[reply_count] => 0
						[last_poster] => N/A
					)

			)

	)

[4] => Array
	(
		[title] => Show Off
		[cat_row] => Array
			(
				[2] => Array
					(
						[icon] => nonew.gif
						[title] => No Subboards Defined!
						[topic_count] => 0
						[reply_count] => 0
						[last_poster] => N/A
					)

			)

	)

)

 

And once again here is the looping function:

<?php
function loop_replace( $loop, $vars = array( ), $error_line, $error_file )
{
	if ( $this->has_error == true )
	{
		return;
	}
	else if ( $this->has_error == false )
	{    
		$this->current_loop_block = $this->generate_block_ref_data( $loop, array( " BEGIN ", " END " ), "loop" );

		foreach ( $vars as $variable_name => $variable_content )
		{
			if ( is_numeric( $variable_name ) && is_array( $variable_content ) )
			{
				$rough_loop = $this->current_loop_block[2];

				if ( is_array( $variable_content ) )
				{
					foreach( $variable_content as $variable_name_2 => $variable_content_2 )
					{
						if ( !is_array( $variable_content_2 ) )
						{
							/**
								Associative Array Loops

								array(
									"title" => "Board Name"
								)
							**/

							$rough_loop = str_replace( $this->replacement_variable_prefix . $loop . "." . $variable_name_2 . $this->replacement_variable_suffix, $variable_content_2, $rough_loop );
						}
						else if ( is_array( $variable_content_2 ) )
						{					
							/**
								Nested Array Loops

								array(
									"title" => "Name",
									"nested_loop" => array(
										"title" => "Sub Name"
									)
								)
							*/

							$this->current_nested_loop_block = $this->generate_block_ref_data( $variable_name_2, array( " BEGIN ", " END " ), "loop", $rough_loop );
							$rough_nested_loop = $this->current_nested_loop_block[2];

							foreach ( $variable_content_2 as $variable_name_nested => $variable_content_nested )
							{								
								if ( is_numeric( $variable_name_nested ) && is_array( $variable_content_nested ) )
								{
									if ( is_array( $variable_content_nested ) )
									{
										foreach( $variable_content_nested as $variable_name_nested_2 => $variable_content_nested_2 )
										{
											$rough_nested_loop = str_replace( $this->replacement_variable_prefix . $variable_name_2 . "." . $variable_name_nested_2 . $this->replacement_variable_suffix, $variable_content_nested_2, $rough_nested_loop );
										}
									}
								}

								$parsed_nested_loop = @rtrim( $rough_nested_loop );									
							}	

							$this->current_nested_loop_block[3] = $parsed_nested_loop;
							$rough_loop = str_replace( $this->replacement_loop_prefix . " BEGIN " . $variable_name_2 . $this->replacement_loop_suffix . substr( $rough_loop, $this->current_nested_loop_block[0], $this->current_nested_loop_block[1] ) . $this->replacement_loop_prefix . " END " . $variable_name_2 . $this->replacement_loop_suffix, $this->current_nested_loop_block[3], $rough_loop ); 	
							$this->current_nested_loop_block = array( );							
						}	
					}
				}					
			}

			$parsed_loop .= rtrim( $rough_loop );
		}

		$this->current_loop_block[3] = $parsed_loop;
		$this->current_template_html = str_replace( $this->replacement_loop_prefix . " BEGIN " . $loop . $this->replacement_loop_suffix . substr( $this->current_template_html, $this->current_loop_block[0], $this->current_loop_block[1] ) . $this->replacement_loop_prefix . " END " . $loop . $this->replacement_loop_suffix, $this->current_loop_block[3], $this->current_template_html ); 
		$this->current_loop_block = array( );
	}
}
?>

 

and the generate_block_ref_data function:

<?php
function generate_block_ref_data( $name, $tag, $type, $content = "" )
{
	$tag_start = ( $type == "loop" ) ? $this->replacement_loop_prefix . $tag[0] . $name . $this->replacement_loop_suffix : $this->replacement_variable_prefix . $tag[0] . $name . $this->replacement_variable_suffix;
	$tag_end = ( $type == "loop" ) ? $this->replacement_loop_prefix . $tag[1] . $name . $this->replacement_loop_suffix : $this->replacement_variable_prefix . $tag[1] . $name . $this->replacement_variable_suffix;

	$tag_start_pos = ( $content != null ) ? strpos( $content, $tag_start ) + strlen( $tag_start ) : strpos( $this->current_template_html, $tag_start ) + strlen( $tag_start );
	$tag_end_pos = ( $content != null ) ? strpos( $content, $tag_end ) : strpos( $this->current_template_html, $tag_end );			
	$tag_length = $tag_end_pos - $tag_start_pos;	

	return array(
		0 => $tag_start_pos, 
		1 => $tag_length, 
		2 => ( $content != null ) ? substr( $content, $tag_start_pos, $tag_length ) : substr( $this->current_template_html, $tag_start_pos, $tag_length ),	
		3 => ""
	);	
}
?>

 

It seems like it is not adding the correct rows together as it should be.

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