3.16 Perl-Based Array Manipulation Features

You're a "Perl monger" and you want to know what array features PHP has that are related to Perl.

Technique

Here is a list of all the Perl-related array manipulation features, as well as (in the "Discussion" section) a list of incompatibilities with their Perl counterparts.

Perl Function	PHP Function(s)
pop()	array_pop()
push()	array_push()
shift()	array_shift()
unshift()	array_unshift()
splice()	array_splice()
join()	join() , implode()
grep()	preg_grep()
keys()	array_keys()
each()	each()
values()	array_values()
reverse()	array_reverse()
sort ()	usort() (to some extent)

Comments

There are some incompatibilities between certain functions; for example, between Perl's push() function and PHP's array_push() function. This is more of a general incompatibility . In Perl, arrays specified in list context are automatically flattened, so

 push (@list1, @list2); 

would combine the two arrays ”the same thing that array_merge() would do in PHP. However, with array_push() this example would create a two-dimensional array because PHP does not automatically flatten its arrays.