Three forms of PHP array output _php tutorial

Copy CodeThe code is as follows:
$BBBB =array ("one" = "AAA", "All" = "BBB");
can only output values value cannot output key
foreach ($bbbb as $color)
{
Echo $color;
}
Both value and key can be output
foreach ($bbbb as $key = $value)
{
echo $key. " = ". $value;
}

Both value and key can be output
while ($color =each ($bbbb)) {
echo $color [' key '];
}
Or
while (list ($key, $value) =each ($BBBB)) {
echo "$key: $value
";
}

Direct access to array elements:
Copy CodeThe code is as follows:
$arr =array (' w ' = ' wen ', ' j ' = ' jian ', ' b ' = ' bao ');
Echo ($arr [' W ']), '
';//function
Echo ($arr [w]), '
';//function
Echo ($arr [0]), '
';//does not work, do not know why???
Echo ($arr [' J ']), '
';//function
Echo ($arr [j]), '
';//function
Echo ($arr [1]), '
';//does not work, do not know why???
Echo ($arr [' B ']), '
';//function
Echo ($arr [b]), '
';//function
Echo ($arr [2]), '
';//does not work, do not know why???
?>

Output:
Copy CodeThe code is as follows:
Wen
Wen
Jian
Jian
Bao
Bao

Doubtful:
Accesses an associative array element,
1, [] in the "key" can not be used without quotation marks ("") can also be accessed???
2, array index Access does not work???
Copy CodeThe code is as follows:
$arr 1=array (' Wen ', ' Jian ', ' bao ');
Echo $arr 1[0], '
', $arr 1[1], '
', $arr 1[2];
?>

Output:
Copy CodeThe code is as follows:
Wen
Jian
Bao

http://www.bkjia.com/PHPjc/327319.html www.bkjia.com true http://www.bkjia.com/PHPjc/327319.html techarticle Copy the code as follows: $BBBB =array ("one" = "AAA", "line" = "BBB"), or//output value can not output key foreach ($bbbb as $color) {echo $color;}//value and Key can output foreach ($bb ...

