How to modify array elements in php

How to modify array elements in php: You can use the array_splice() function to modify it. The array_splice() function removes selected elements from an array, replaces them with new elements, and returns an array of the removed elements. For example: [array_splice($a1,0,2,$a2)].

array_splice() function removes the selected element from an array and replaces it with a new element. The function will also return an array of removed elements.

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Syntax:

array_splice(array,start,length,array)

Parameters:

• ##array Required. Specifies an array.​

• #start Required. numerical value. Specifies the starting position of deleted elements.

  
  

• length Optional. numerical value. Specifies the number of elements to be removed, which is also the length of the returned array.

  
  

• array Optional. Specifies the array with the elements to be inserted into the original array. If there is only one element, it can be set to a string and does not need to be set to an array.

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<?php
$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
$a2=array("a"=>"purple","b"=>"orange");
array_splice($a1,0,2,$a2);
print_r($a1);
?>

Array ( [0] => purple [1] => orange [c] => blue [d] => yellow )

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