Simple help for broken PHP

[robertsmith17]

I'm a complete newbie with PHP - have been making some changes on a WordPress site and ran across an error "Warning: Invalid argument supplied for foreach() in /home/thesite/public_html/wp-content/themes/site1/custompost_entertainment.php on line 35"

 

if ($post->post_type == 'page'){
	echo apply_filters('the_content',$post->post_content);
	
	echo "<section id='featured_pages'>";
	
	foreach ($customPosts as $date=>$posts){
		$date = new DateTime($date);
		
		foreach ($posts as $page){
			$custom_meta = get_post_custom($page->ID);
			

 

Any ideas?

Edited March 26, 2013 by robertsmith17

[akphidelt2007]

It means $customPosts or $posts is not an array. You have to provide an array even if it's an empty array.

 

If the array is not explicitly set, than before you run the foreach statement... do an if(isset($customPosts)) { foreach() }

Edited March 26, 2013 by akphidelt2007

[shlumph]

Not to mention $date=>$posts is not valid syntax.

[Barand]

Not to mention $date=>$posts is not valid syntax.

 

it is if $posts contains the name of an object property

 

$arr = array ('a' => 100, 'b' => 200);
$obj = (object)$arr;

$x = 'a';
echo $obj->$x;  // 100
$x = 'b';
echo $obj->$x;  // 200

[shlumph]

 

it is if $posts contains the name of an object property

 

$arr = array ('a' => 100, 'b' => 200);
$obj = (object)$arr;

$x = 'a';
echo $obj->$x;  // 100
$x = 'b';
echo $obj->$x;  // 200

 

Ahh, you are right.  I retract that statement, for some reason I read it as $date=>posts.  Like OP was trying to access an object variable.

[robertsmith17]

Thanks for the replies, I really appreciate it.

 

I don't really understand the syntax of 

foreach ($customPosts as $date=>$posts){

 

 

Like I said - I'm a complete novice with PHP.

 

I'm a lot more comfortable with the likes of C#, where a foreach loop would be written something like this (for example):

foreach (String str in stringArray){

 

 

I'm afraid I just don't understand "$customPosts as $date=>$posts" at all. Could someone pseudo-code it for me? Or explain it in terms of C#/Java/JS type syntax?

 

Thanks again. Sorry for being a bit dense...

[jcbones]

Well, try looking at it like:

 

foreach($array as $index => $value) {