Accessing a PHP array object(stdClass) values

Question

I am using WordPress' native function get_the_terms and it returns this array with an object inside:

array (size=2)
  157 => 
    object(stdClass)[41]
      public 'term_id' => int 157
      public 'name' => string 'Entertainment' (length=13)
      public 'slug' => string 'entertainment' (length=13)
      public 'term_group' => int 0
      public 'term_taxonomy_id' => int 157
      public 'taxonomy' => string 'category' (length=8)
      public 'description' => string '' (length=0)
      public 'parent' => int 0
      public 'count' => int 1
      public 'object_id' => int 644
      public 'filter' => string 'raw' (length=3)
  151 => 
    object(stdClass)[40]
      public 'term_id' => int 151
      public 'name' => string 'Featured' (length=8)
      public 'slug' => string 'featured' (length=8)
      public 'term_group' => int 0
      public 'term_taxonomy_id' => int 151
      public 'taxonomy' => string 'category' (length=8)
      public 'description' => string '' (length=0)
      public 'parent' => int 0
      public 'count' => int 1
      public 'object_id' => int 644
      public 'filter' => string 'raw' (length=3)

How do I access

  public 'name' => string 'Featured' (length=8)

This works

$terms = get_the_terms( $post->ID, 'category' );
foreach ($terms as $term) {
    $test = $term->name;
    echo $test;
}

This does not work:

for($i=1; $i<3; $i++) {
    $term = $terms->name;
    echo $term;
}

nor does this work

for($i=1; $i<3; $i++) {
    $term = $terms[0]->name;
    //$term = $terms[1]->name;
    //$term = $terms[157]->name; // works but not reliable
    echo $term;
}

Why?

Because you aren't using the index to access the aray member you want. Try $term = $terms[$i]->name; — vch
– vch, Commented Aug 23, 2014 at 20:23
I did that and using terms[157] works but isnt that subject to change? I just want the first spot in the array. terms[0]->name does not work. — Ben Racicot
– Ben Racicot, Commented Aug 23, 2014 at 20:25

dehrg · Accepted Answer · 2014-08-23 20:42:26Z

1

The function get_the_terms is returning an array, which is indexed by the term_id of each element.

That is why $terms[157] and $terms[151] are working as you expect. See the PHP reference on arrays for details of this behavior.

Your best bet is to stick with the built in foreach which works as stated in your question.

edited Aug 23, 2014 at 20:42

answered Aug 23, 2014 at 20:26

dehrg

1,74115 silver badges17 bronze badges

Sign up to request clarification or add additional context in comments.

5 Comments

Ben Racicot Over a year ago

Thanks @dehrg but see my comment above. This is one of the first things I've tried in the for loop.

Ben Racicot Over a year ago

Yes the point of the for loop is to limit the amount of categories displayed. In this case only 2.

dehrg Over a year ago

Why don't you want to use the foreach? Given that the function is returning an array with odd indices, that seems like your best bet.

Ben Racicot Over a year ago

Ok, and just build in the incrementing var to limit the loop? But I'm more concerned with why terms[0] or terms[1] won't work.

dehrg Over a year ago

Edited to answer your question

Lightness Races in Orbit · Accepted Answer · 2014-08-23 20:43:25Z

1

In the for loop you are trying to access name directly within the array, not the stdclass objects.

You need to use the $i variable as the index of the array.

for ($i=1; $i<3; $i++) {
    $term = $terms[$i]->name;
    echo $term;
}

edited Aug 23, 2014 at 20:43

Lightness Races in Orbit

387k77 gold badges670 silver badges1.1k bronze badges

answered Aug 23, 2014 at 20:26

Joshua Griffiths

4173 silver badges9 bronze badges

Comments

Aman Maurya · Accepted Answer · 2015-01-22 20:33:23Z

0

Function using the wp_parse_args system to manage its single $args argument, which could be given whatever values you wanted. In this case $args stores detailed display overrides, a pattern found in many WordPress functions.

$args = wp_parse_args( $args, $term->name );
echo $arg[157]['term_id']; //output 157
echo $arg[157]['name'];  //output Entertainment

works fine for me more detail

http://codex.wordpress.org/Function_Reference/wp_parse_args

answered Jan 22, 2015 at 20:33

Aman Maurya

1,32512 silver badges26 bronze badges

Collectives™ on Stack Overflow

Accessing a PHP array object(stdClass) values

3 Answers 3

5 Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

5 Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related