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PHP Ds / Vector slice () function

Syntax:
DsVector public DsVector::slice ($index, $length) / pre>  Parameters:  This function accepts two parameters as mentioned above and described below:
  • $index:this parameter contains the starting index of the subvector. The index value can be positive or negative. If the index value is positive, it starts at the index of the vector, and if the index value is negative, it starts at the end.
  • $length:This parameter contains the length of the subvector. This parameter can take positive and negative values. If the length is positive, then the size of the subvector is equal to the specified length, and if the length is negative, the vector will stop so many values ​​from the end.
Return value:This function returns the subvector of the specified range ... The programs below illustrate the Ds / Vector::slice()function in PHP: Program 1:  
// Create a new vector $vect = new DsVector ([1, 2, 3, 4, 5, 6]); echo ( " Original vector: " );  
// Show vector element var_dump ( $vect );  
// Use the slice() function for
// create a subvector $res = $vect -> slice (1, 2); echo ( " New sub-vector " );  
// Display sub-vector elements var_dump ( $res );  
?>
Exit:
Original vector: object (DsVector) # 1 (6) {[0] = > int (1) [1] = > int (2) [2] = > int (3) [3] = > int (4) [4] = > int (5) [5] = > int (6)} New sub-vector object (DsVector) # 2 (2) {[0] = > int (2) [1] = > int (3)}
Program 2:  
// Create a new vector $vect = new DsVector ([1, 2 , 3, 4, 5, 6]); echo ( " Original vector: " );  
// Show vector element var_dump ( $vect );  
// Use the slice() function for
// create a subvector $res = $vect -> slice (2, -2); echo ( " New sub-vector " );  
// Display sub-vector elements var_dump ( $res ); $res = $vect -> slice (4); echo ( " New sub-vector " );  
// Display sub-vector elements var_dump ( $res );  
?>
Output:
Original vector: object (DsVector) # 1 (6) {[0] = > int (1) [1] = > int (2) [2] = > int (3) [3] = > int (4) [4] = > int (5) [5] = > int (6)} New sub-vector object (DsVector) # 2 (2) {[0] = > int (3) [1] = > int (4)} New sub-vector object (DsVector) # 3 (2) {[0] = > int (5) [1] = > int (6)}
Link: http: // php .net / manual / en / ds-vector.slice.php

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