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源代码
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<html> <body> <?php $a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow"); $a2=array("e"=>"red","f"=>"green","g"=>"blue"); $result=array_diff($a1,$a2); print_r($result); ?> </body> </html>
运行结果
<!DOCTYPE html> <html> <body> Array ( [d] => yellow ) </body> </html>