Copy Code code as follows:
<?php
A
$arr =array (' A ' => ' abc ', ' B ' =>123, ' C ' =>true);
B
$arr =range (' A ', ' d ');
1
for ($i =0; $i <sizeof ($arr); $i + +)
echo $arr [$i]. ', ';
echo ' <br/> ';
2
foreach ($arr as $key)
echo "$key,";
echo ' <br/> ';
3
foreach ($arr as $key => $val)
echo "$key-$val,";
echo ' <br/> ';
4
Reset ($arr);
while ($item =each ($arr)) {
echo $item [' key ']. -'. $item [' value ']. ', ';
}
echo ' <br/> ';
5
Reset ($arr);
while (list ($key, $val) =each ($arr)) {
echo "$key-$val,";
}
echo ' <br/> ';
?>
Use statement a $arr =array (' A ' => ' abc ', ' B ' =>123, ' C ' =>true); The $arr is initialized with an array of numeric indices, and the output is as follows:
, , ,
ABC, 123, 1,
A-ABC, b-123, C-1,
A-ABC, b-123, C-1,
A-ABC, b-123, c-1, using statement b $arr =range (' A ', ' d '); Initialize the $arr to get an associative array, the output is as follows:
A, B, C, D,
A, B, C, D,
0-a, 1-b, 2-c,
0-a, 1-b, 2-c,
0-a, 1-b, 2-c, the For loop only has a limited number of numeric indexes; the for and foreach traversal end does not require the reset () operation of the data for the next traversal, and the each method requires.
