PHP maekisesaizi ane PHP Basic yekudzidziswa kosi mhinduro

Nhamba huru i nhamba yakakura kudarika 1 ane vapatsanuri chete ari 1 uye pachayo, senge -2, 3, 5, 7, 11, nezvimwe.

Somuenzaniso, 17 inhamba huru nokuti inongopatsanurwa na1 na17. Zvisinei, 18 haisi nhamba huru nokuti inogovaniswa na2, 3, 6, 9 uye nhamba yacho pachayo. Idzi inzira dzinoverengeka dzekudhinda nhamba yepamusoro pakati pe1 ne100 mumutauro wepurogiramu yePHP.

Kodhi inotevera inodhinda runyoro rwenhamba dzekutanga pakati pe1 ne50 (kureva kuti, nhamba dzisingapatsanurwe nechimwe chinhu kunze kwe1 kana nhamba yacho) uchishandisa loop yenguva.

<?php 
$limit = 50;
$init = 2;
	
while(TRUE)
{
	$div = 2;
	if($init > $limit) 
	{
		break;
	}
	while(TRUE)
	{
		if($div > sqrt($init))
		{
			echo $init."  ";
			break;
		}
		if($init % $div == 0) 
		{
			break;
		}
		$div = $div + 1;
	}
	$init = $init + 1;
}

Mukugadzirisa tine maviri apo zvishwe. Iyo yemukati nepo loop inoedza neese zvinogoneka divisor. Kana iyo yemukati loop ikawana divisor, iyo nhamba haisi yekutanga, saka inomira isina kudhinda chero chinhu, uye kana bvunzo ikaenda yese kuskweya midzi yenhamba, tinogona kufunga kuti nhamba ndiyo yekutanga. Loop yekunze inofamba nenhamba dzose dziri pakati pa 1 ne 50. Lop iyi inotyoka kana tasvika pakatsemuka nhamba dzinofanirwa kuongororwa.