- PHP の for
for ($i = 0; $i < 10; $i ++)
echo "$i\n";
- Perl の for
for ($i = 0; $i < 10; $i ++)
print "$i\n";
- Javascript の for
for (var i = 0; i < 10; i ++)
document.writeln (i);
- PHP の foreach
$array1 = array ("foo", "bar", "baz");
foreach ($array1 as $value)
echo "$value\n";
$array2 = array ("year" => 2010, "month" => 9, "day" => 27);
foreach ($array1 as $key => $value)
echo "$key: $value\n";
- Perl の foreach
@array1 = ("foo", "bar", "baz");
foreach $value (@array1)
print "$value\n";
%hash1 = ("year" => 2010, "month" => 9, "day" => 27);
foreach $key (keys %hash1)
print "$key: $hash1{$key}\n";
# 実は for と foreach は同様に使える。インタプリタが文脈で判断するので。
@array2 = qw (apple peach banana);
for $value (@array2)
print "$value\n";
- Javascript の for ( in )
// for ( in ) を配列で使用した場合は添字を列挙
var array = ["foo", "bar", "baz"];
for (var index in array)
document.writeln (array [index]);
// 連想配列で使用した場合はキーを列挙
var hash = {year: 2010, month: 9, day: 27};
for (var key in hash)
document.writeln (key + ': ' + hash [key]);
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