関連ワード:  php find in 2d array    php find in multidimensional array by value    php find in multidimensional array    php search in 2d array    php find in multidimensional array by key    php search in multidimensional array    php search in multidimensional array by key value    php search in multidimensional array by value    php search in two dimensional array    php find duplicates in multidimensional array