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給定這個二維數組,每個元素都有兩個索引 - 行和列。用於從數組中提取數據的PHP選項?
<?php
$shop = array(array("rose", 1.25 , 15),
array("daisy", 0.75 , 25),
array("orchid", 1.15 , 7)
);
?>
這些是我使用行列索引從數組中提取數據的唯一兩個選項嗎?
<?php
echo "<h1>Manual access to each element</h1>";
echo $shop[0][0]." costs ".$shop[0][1]." and you get ".$shop[0][2]."<br />";
echo $shop[1][0]." costs ".$shop[1][1]." and you get ".$shop[1][2]."<br />";
echo $shop[2][0]." costs ".$shop[2][1]." and you get ".$shop[2][2]."<br />";
echo "<h1>Using loops to display array elements</h1>";
echo "<ol>";
for ($row = 0; $row < 3; $row++)
{
echo "<li><b>The row number $row</b>";
echo "<ul>";
for ($col = 0; $col < 3; $col++)
{
echo "<li>".$shop[$row][$col]."</li>";
}
echo "</ul>";
echo "</li>";
}
echo "</ol>";
?>