Php array prevention, keyvalue usage, patchwork, and sharding usage

Prevent repeated php arrays, keyvalue usage, splicing, and splitting ??????? Foreach ($ aas $ key = & gt; $ val) {// The key is an array $ a subscript ?? $ Val is the value of $ ??????????? $ Val = array_unique ($ val php array to prevent duplication, key value usage, splicing, and sharding usage

??????? Foreach ($ a as $ key => $ val) {// The key is an array $ a subscript ?? $ Val is the value of $.
??????????? $ Val = array_unique ($ val); // This prevents the array from repeating $ val.
??????????? $ InsertDate = array (// set the new array
??????????????? 'Ini _ id' => $ key, // array subscript 'ini _ id'
??????????????? 'Door _ id' => implode (',', $ val) // concatenate the value of $ a array? Explode is split
??????????? );