Kiwango cha 9.7 cha Kitatizo cha PHP

Tengeneza tovuti, inayotoa utabiri wa nasibu inapokaribishwa, mzuri au mbaya. Utabiri unapaswa kuhifadhiwa katika Hifadhidata. Ukisasisha ukurasa, utabiri haupaswi kubadilika wakati wa sasa ya leo.

Imetolewa safu ya kiholela ya pande mbili:

[
	[11, 12, 13, 14, 15],
	[21, 22, 23, 24, 25],
	[31, 32, 33, 34, 35],
	[41, 42, 43, 44, 45],
	[51, 52, 53, 54, 55],
]

Weka sifuri vipengele vilivyo sio kwenye diagonal:

[
	[11,  0,  0,  0, 15],
	[ 0, 22,  0, 24,  0],
	[ 0,  0, 33,  0,  0],
	[ 0, 42,  0, 44,  0],
	[51,  0,  0,  0, 55],
]

Acha kwenye faili kuhifadhiwe JSON ifuatayo:

{
	[
		"catg": "catg1",
		"name": "prod1",
		"cost": "100"
	],
	[
		"catg": "catg2",
		"name": "prod2",
		"cost": "200"
	],
	[
		"catg": "catg3",
		"name": "prod3",
		"cost": "300"
	]
}

Tengenezwa kwa kutumia data za faili msimbo ufuatao wa HTML na uitumpe kwa kivinjari:

<table>
	<tbody>
		<tr>
			<td>1</td>
			<td>catg1</td>
			<td>prod1</td>
			<td>100</td>
		</tr>
		<tr>
			<td>2</td>
			<td>catg2</td>
			<td>prod2</td>
			<td>200</td>
		</tr>
		<tr>
			<td>3</td>
			<td>catg3</td>
			<td>prod3</td>
			<td>300</td>
		</tr>
	</tbody>
</table>