The Ds\Sequence::allocate() function is an inbuilt function in PHP which is used to allocate enough memory for required capacity.
Syntax:
void abstract public Ds\Sequence::allocate ( int $capacity )
Parameter: This function accepts single parameter $capacity which indicate number of capacity allocated.
Return value: This function does not return any values.
Below programs illustrate the Ds\Sequence::allocate() function in PHP:
Example 1:
<?php   // Create new sequence $seq = new \Ds\Vector();   // Use capacity() function to // display the capacity var_dump($seq->capacity());   // Allocate capacity $seq->allocate(50);   // Display capacity var_dump($seq->capacity());   // Allocate capacity $seq->allocate(80);   // Display capacity var_dump($seq->capacity()); ?> |
Output:
int(8) int(50) int(80)
Example 2:
<?php   // Create new sequence $seq = new \Ds\Vector();   // Declare capacity array $arr = array(10, 20, 30, 40);   // Loop run for every array element  foreach ($arr as $val) {            // Allocate capacity     $seq->allocate($val);       // Display capacity     var_dump($seq->capacity()); }   ?> |
Output:
int(10) int(20) int(30) int(40)
Reference: http://php.net/manual/en/ds-sequence.allocate.php
