PHP array intercept array_slice () function

Definition and usage
The Array_slice () function takes a value out of the array and returns it as a condition.
Note: If the array has a string key, the returned array retains the key name. (see Example 4)
Grammar
Array_slice (Array,offset,length,preserve)
Parameters
Array
Necessary. Specifies the input array.
Offset
Necessary. Numerical. Specifies the starting position of the element to be removed. If it is a positive number, start with the previous one, and if it is negative, take the offset from the back to the absolute value.
Length
Optional. Numerical. Specifies the length of the returned array. If length is positive, the number of elements is returned. If length is negative, the sequence terminates so far away from the end of the array. If omitted, the sequence starts with offset until the end of the array.
Preserve
Optional. Possible values:
True-reserved Key
False-Default-reset key


Example 1
$a =array (0=> "Dog",1=> "Cat",2=> "Horse",3=> "Bird");
Print_r (Array_slice ($a,));
?>
Output: Array ([0] = Cat [1] = Horse)


Example 2
With a negative offset parameter:
$a =array (0=> "Dog",1=> "Cat",2=> "Horse",3=> "Bird");
Print_r (Array_slice ($a, -2,1));
?>
Output: Array ([0] = Horse)


Example 3
The preserve parameter is set to true:
$a =array (0=> "Dog",1=> "Cat",2=> "Horse",3=> "Bird");
Print_r (Array_slice ($a, 1,2,true));
?>
Output: Array ([1] = Cat [2] = Horse)


Example 4
With string key:
$a =array ("a" = "Dog", "b" = "Cat", "c" = "Horse", "D" and "Bird");
Print_r (Array_slice ($a,));
?>
Output: Array ([b] = Cat [c] = Horse)

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