数组
数组能够在单独的变量名中存储一个或多个值
语法格式&＃xff1a;
array(key &＃61;> value,key &＃61; > value)
例子&＃xff1a;
$name_list &＃61; array("tom" &＃61;> 13,"jak" &＃61;> 15);
索引数组(每一个素组都是有自己的索引&＃xff0c;数组索引从0开始计算)
例子&＃xff1a;
php $name_list &＃61; array("tom","jak","cat");
for ($i&＃61;0; $i <3; $i&＃43;&＃43;) {
echo "You name is ".$name_list["$i"]."
";
}?>
结果&＃xff1a;(
是HTML中的换行标签)
数组取值
例子&＃xff1a;
php$name_list &＃61; array("tom","jak","cat");
echo "name_list is "."
".$name_list["0"]."
".$name_list["1"]."
".$name_list["2"];
?>
结果&＃xff1a;
关联数组(关联数组是分配给数组的指定键的数组)
语法格式&＃xff1a;
array("key" &＃61;> "value");
例子&＃xff1a;
php
$name&＃61;array("tom"&＃61;>13,"jak"&＃61;>18,"cat"&＃61;>20);
echo "You age is ".$name[&＃39;tom&＃39;];
?>
结果&＃xff1a;
如需遍历并输出关联数组的所有值&＃xff0c;可以使用 foreach 循环
例子&＃xff1a;
php
$name&＃61;array("tom"&＃61;>13,"jak"&＃61;>18,"cat"&＃61;>20);
foreach ($name as $key &＃61;> $value) {echo "You name is ".$key." and age is ".$value."
";
}
?>
京公网安备 11010802041100号