Does php have map?

Does php have a map?

php has a map, that is, the array_map() function applies user-defined functions to on each value in the array, and returns the array with the new value after the user-defined function is applied.

The number of parameters accepted by the callback function should be consistent with the number of arrays passed to the array_map() function.

Tip: You can input one or more arrays to the function.

Syntax

array_map(myfunction,array1,array2,array3...)

Parameters

myfunction is required. The name of the user-defined function, or null.

array1 Required. Specifies an array.

array2 Optional. Specifies an array.

array3 Optional. Specifies an array.

Return Value: Returns an array containing the values ​​of array1, after applying the custom function to each value.

Example

Use user-defined function to change the value of the array:

<?php
function myfunction($v)
{
if ($v==="Dog")
  {
  return "Fido";
  }
return $v;
}
$a=array("Horse","Dog","Cat");
print_r(array_map("myfunction",$a));
?>

Output:

Array ( [0] => Horse [1] => Fido [2] => Cat )

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