PHP ʖ²ἯTH º󍋼/A array_walk ˵÷ =ד 1. array_walk() =ד ?php $fruits = array ("d"= "lemon", "a"= "orange", "b"= "banana", "c"= "apple"); function test_alter ($item1, $key, $prefix) {$item1 = "$prefix: $item1";} function test_print ($item2, $key) {echo "$key. $item2 br \n";} echo "Before ...:\n"; array_walk ($fruits, 'test_print'); array_walk ($fruits, 'test_alter', 'fruit'); echo "... and after:\n"; array_walk ($fruits, 'test_print');? Before...: d. lemon a. orange b. banana c. apple... and after: d. fruit: lemon a. fruit: orange b. fruit: banana c. fruit: apple º󍋼/A ưµ㼯A array_values ɏһ¼¶ array