PHP合并兩個數組的兩種方式

echo "\r\n第一種情況\r\n"; $a=array(1,2,3,4,5,6); $b=array(7,8,9); $c=array_merge ($a,$b); print_r($c); $c=$a+$b; print_r($c); $c=$b+$a; print_r($c); echo "\r\n第二種情況\r\n"; $a=array('a','b','c','d','e','f'); $b=array('a','x','y'); $c=array_merge ($a,$b); print_r($c); $c=$a+$b; print_r($c); $c=$b+$a; print_r($c); echo "\r\n第三種情況\r\n"; $a=array( 1=>'a', 2=>'b', 3=>'c', 4=>'d', 5=>'e', 6=>'f'); $b=array( 1=>'a', 7=>'x', 8=>'y'); $c=array_merge ($a,$b); print_r($c); $c=$a+$b; print_r($c); $c=$b+$a; print_r($c); ?> 複製代碼 輸出結果：第一種情況Array( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 [5] => 6 [6] => 7 [7] => 8 [8] => 9)Array( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 [5] => 6)Array( [0] => 7 [1] => 8 [2] => 9 [3] => 4 [4] => 5 [5] => 6) 第二種情況Array( [0] => a [1] => b [2] => c [3] => d [4] => e [5] => f [6] => a [7] => x [8] => y)Array( [0] => a [1] => b [2] => c [3] => d [4] => e [5] => f)Array( [0] => a [1] => x [2] => y [3] => d [4] => e [5] => f) 第三種情況Array( [0] => a [1] => b [2] => c [3] => d [4] => e [5] => f [6] => a [7] => x [8] => y)Array( [1] => a [2] => b [3] => c [4] => d [5] => e [6] => f [7] => x [8] => y)Array( [1] => a [7] => x [8] => y [2] => b [3] => c [4] => d [5] => e [6] => f)

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