Kiwango cha 10.8 cha Kitatizo cha PHP

Andika msimbo ambao utakagua ugumu wa nywila. Vigezo vya ugumu buni mwenyewe.

Kuna safu. Onyesha kwenye skrini kilahadhi ya kubadilishana kwa vipengele vya safu hii.

Kuna fomu na viingilio viwili. Kwa kuituma fomu, onyesha orodha ya orodha ul ya namba zilizo shirikishi kutoka kwa kipindi, kilichobainishwa na thamani za viingilio.

Acha kwenye faili ihifadhiwe JSON ya miji ya aina ifuatayo:

{
	[
		"id": "1",
		"city": "city1",
		"country": "country1",
	],
	[
		"id": "2",
		"city": "city2",
		"country": "country1",
	],
	[
		"id": "3",
		"city": "city3",
		"country": "country2",
	]
}

Acha kwenye faili ihifadhiwe JSON ya nchi ya aina ifuatayo:

{
	[
		"id": "1",
		"country": "country1",
	],
	[
		"id": "2",
		"country": "country2",
	],
	[
		"id": "3",
		"country": "country3",
	]
}

Andika hati-mtandao, ambayo badala ya nchi itaweka id zao:

{
	[
		"id": "1",
		"city": "city1",
		"country_id": "1",
	],
	[
		"id": "2",
		"city": "city2",
		"country_id": "1",
	],
	[
		"id": "3",
		"city": "city3",
		"country_id": "2",
	]
}