PHP | Ds\Deque allocate() Function Last Updated : 11 Jul, 2025 Summarize Comments Improve Suggest changes Share Like Article Like Report The Ds\Deque::allocate() function is an inbuilt function in PHP which is used to allocate memory as specified in the argument. If the argument is not defined, then the Deque of default size will be created. Syntax: public Ds\Deque::allocate( $capacity ) : void Parameters: This function accepts single parameter $capacity which holds the number of values for which space is to be allocated. Return Value: This function does not return any value. Below programs illustrate the Ds\Deque::allocate() function in PHP: Program 1: PHP <?php // Declare Deque of default size $deq = new \Ds\Deque(); // Display the capacity of Deque var_dump($deq->capacity()); // Allocating space for 50 values // to the Deque $deq->allocate(50); // Display the capacity of Deque var_dump($deq->capacity()); ?> Output: int(8) int(64) Program 2: PHP <?php // Declare Deque of default size $deck = new \Ds\Deque(); // Display the Deque capacity var_dump($deck->capacity()); // Allocating space for 50 values // to the Deque $deck->allocate(50); // Display the Deque capacity var_dump($deck->capacity()); // Allocating space for 60 values // to the Deque $deck->allocate(60); // Display the Deque capacity var_dump($deck->capacity()); ?> Output: int(8) int(64) int(64) Reference: https://www.php.net/manual/en/ds-deque.allocate.php Comment More infoAdvertise with us Next Article PHP DsQueue allocate() Function B barykrg Follow Improve Article Tags : Web Technologies PHP PHP-function PHP-ds_map Similar Reads PHP | DsDeque allocate() Function The Ds\Deque::allocate() function is an inbuilt function in PHP which is used to allocate memory as specified in the argument. If the argument is not defined, then the Deque of default size will be created. Syntax: public Ds\Deque::allocate( $capacity ) : void Parameters: This function accepts singl 1 min read PHP DsQueue allocate() Function The Ds\Queue::allocate() Function in PHP is used to allocate memory for a Queue class instance. This function allocates sufficient memory for a given capacity for an instance of Queue class. Syntax: void public Ds\Queue::allocate ( int $capacity ) Parameters: This function accepts a single parameter 2 min read PHP | DsSequence allocate() Function 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 allocat 1 min read PHP | DsSet allocate() Function The Ds\Set::allocate() function is an inbuilt function in PHP which is used to allocate memory for required capacity. Syntax: void public Ds\Set::allocate( $capacity ) Parameters: This function accepts single parameter $capacity which holds the value of capacity to be allocated. Capacity always roun 1 min read PHP | DsStack allocate() Function The Ds\Stack::allocate() function is an inbuilt function in PHP which is used to allocate memory for required capacity. This function allocates sufficient memory for a given capacity of an instance of Stack class.Syntax: void Ds\Stack::allocate( $capacity ) Parameters: This function accepts a single 2 min read PHP | DsVector allocate() Function The Ds\Vector::allocate() function is an inbuilt function in PHP which is used to allocate enough memory for a required capacity. It provides the custom size of the vector to allocate space. Syntax: void public Ds\Vector::allocate( $capacity ) Parameters: This function accepts a single parameter $ca 2 min read PHP | Ds\Deque allocate() Function min read Like