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<!DOCTYPE html> <html> <body> <?php function myfunction($value,$key) { echo "键 $key 的值是 $value 。<br>"; } $a1=array("a"=>"red","b"=>"green"); $a2=array($a1,"1"=>"blue","2"=>"yellow"); array_walk_recursive($a2,"myfunction"); ?> </body> </html>