How to replace array value with asterisk in php

Array_splice() can be used to replace array values ​​with asterisks. If you only want to replace one value, you can use "array_splice(array, starting position, 1, "*")"; if you want to replace multiple values, you can use "array_splice(array, position, replacement number, replacement array)", array contains multiple replacement values.

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In php, you can use array_splice () function to replace the array value with asterisks.

array_splice() is a powerful function that can delete, insert, and replace elements.

Use the array_splice() function to replace a specified number of elements starting from a specified position. If multiple values ​​are replaced, the replacement value can be an array.

array_splice($array,$start,$length,$replacement)

Parameters:

• arr represents an array.
• start indicates the position (subscript) where deletion begins:
  • If start is a positive number, delete from front to back.
  • If start is a negative number, start from the position -start from the end of arr and delete from back to front. For example -2 means start from the second to last element of the array.
• length is an optional parameter, indicating the number of elements to be deleted:
  • If length is a positive number, it means length elements are deleted;
  • If length is a negative number, then all elements starting from start and counting down to length from the end of the array will be deleted;
  • If it is omitted, all elements starting from start and ending at the end of the array will be deleted.
• replacement is an optional parameter indicating the value to be replaced. If replacement has multiple values, it needs to be set to an array. If there is only one value, it does not need to be set to an array.

If a replacement operation is performed, the length value and the number of replacements need to be consistent.

Example 1: Replace one value of an array with an asterisk

<?php
$arr=array(1,2,3,4,5);
var_dump($arr);
array_splice($arr,1,1,"*");
var_dump($arr);
?>

Example 2: Replace multiple values ​​of an array The value is an asterisk

If multiple values ​​are replaced, the replacement value can be an array; and the number of replacements and the length of the replacement array must be consistent.

<?php
$arr=array(1,2,3,4,5);
var_dump($arr);
array_splice($arr,1,3,array("*","*","*"));
var_dump($arr);
?>

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