php - Why is a curly brace around a string not outputting the correct SimpleXML result? -

php - Why is a curly brace around a string not outputting the correct SimpleXML result? -

i getting info api returns list of tasks so:

<tasks> <task> <id type="integer">937510</id> <external-id nil="true"> <description>needs italic in 2nd line of re-create in paragraph</description> </external-id> </task> </tasks>

i attempting parse above xml using simple php code in 5.6.2. $api object of defined class retrieves info without issue:

$tasks_xml = $api->get_project_tasks('17347'); $tasks_object = new simplexmlelement($tasks_xml); echo '<h2>'.$tasks_object->task[0]->id.'</h2>'; echo '<h2>'.$tasks_object->task[0]->{'external-id'}->description.'</h2>';

however, output receive following. external-id not accessed though surrounding in curly braces , quotes.

<h2>280095</h2> <h2></h2>

i same result if save 'external-id' variable $external_id , access using ->task[0]->$external_id.

what need access info within external-id node?

edit: turns out when simplexml parsed xml, made description kid of external-id. updating query task[0]->description solved problem. thanks, mario.

php xml oop simplexml curly-braces