PHP Pocket Reference

Miscellaneous Functions

Program Execution Functions

escapeshellcmd(string command)

Escape shell metacharacters

int exec(string command [, array output [, int return_value]])

Execute an external program

int passthru(string command [, int return_value])

Execute an external program and display raw output

int system(string command [, int return_value])

Execute an external program and display output

Random Number Functions

int getrandmax(void)

Return the maximum value a random number can have

int mt_getrandmax(void)

Return the maximum value a random number from Mersenne Twister can have

int mt_rand([int min, int max])

Return a random number from Mersenne Twister

void mt_srand(int seed)

Seed Mersenne Twister random number generator

int rand([int min, int max])

Return a random number

void srand(int seed)

Seed random number generator

Semaphore Functions

int sem_acquire(int id)

Acquire the semaphore with the given id, blocking if necessary

int sem_get(int key [, int max_acquire [, int perm]])

Return an ID for the semaphore with the given key, and allow max_acquire (default 1) processes to acquire it simultaneously

int sem_release(int id)

Release the semaphore with the given ID

Shared Memory Functions

int shm_attach(int key, int memsize, int perm)

Create or open a shared memory segment

int shm_detach(int shm_id)

Disconnect from shared memory segment

mixed shm_get_var(int id, int variable_key)

Return a variable from shared memory

int shm_put_var(int shm_id, int variable_key, mixed variable)

Insert or updates a variable in shared ...