Remove empty elements from PHP array

array_filter, Remove empty elements from PHP array

Example 1)

Remove empty string elements

Elements made up of white space are not removed.

$arr = array("lemon", "", "", "\t\n", "orange");

$reduced_arr = array_filter($arr);

print_r($reduced_arr);

# Array

# (

#     [0] => lemon

#     [3] =>

# 

#     [4] => orange

# )

Example 2)

trim() removes whitespace from an empty string

$arr = array("lemon", "", "", "\t\n", "orange");

$reduced_arr = array_filter(array_map('trim',$arr));

print_r($reduced_arr);

# Array

# (

#     [0] => lemon

#     [4] => orange

# )

Example 3)

0 to organize into a base array.

$arr = array("lemon", "", "", "\t\n", "orange");

$reduced_arr = array_values(array_filter(array_map('trim',$arr)));

print_r($reduced_arr);

# Array

# (

#     [0] => lemon

#     [1] => orange

# )