How to merge several arrays into an array in PHP

How to merge several arrays into an array in PHP

Merging one-dimensional arrays

Merging two-dimensional arrays the array_merge_recursive () function in PHP can be implemented to merge elements of one or more arrays, and the values in an array are appended to the previous array. and returns an array as the result. When there are duplicate key names, the values are not overwritten, but the values of multiple identical key names are recursively grouped into an array.

Array_merge_recursive (Array1,array2,array3 ...)

Parameter description array1 required. The first array entered. Array2 required. The second array entered. Array3 is optional. Multiple input arrays that can be specified. For example:

 
  "Horse", "b" = "Dog");　　$a 2=array ("c" = "Cow", "b" = "Cat"); Print_r (array_merge_recursive ($a 1, $a 2));? >

Note: the Array_merge () function can also be implemented, unlike the array_merge_recursive () function, if the key name is duplicated, the key is the value corresponding to the last key name (followed by overwriting the previous). If the array is a numeric index, the key name is re-indexed in a sequential manner.

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