開発環境
- OS X Lion - Apple(OS)
- Apache (Web Server)
- PHP (サーバーサイドプログラミング言語)
- MySQL (データベース)
- TextWrangler(Text Editor) (BBEditの無料機能制限版、light版)
『初めてのPHP & MySQL 第2版』(Michele E. Davis、Jon A. Phillips 著、西沢 直木 訳、オライリー・ジャパン、2008年、ISBN978-4-87311-365-4)の6章(配列)の問題を解いてみる。
問6-1.
数値インデックスの配列の最初の要素のインデックスは0。
問6-2, 3, 4.
コード(TextWrangler)
<html>
<head>
<meta content='text/html; charset=UTF-8' http-equiv='Content-Type'/>
<title></title>
</head>
<body>
<?php
$lang[] = 'php';
$lang[] = 'javascript';
$lang[] = 'C#';
echo "$lang[0]<br /><br />";
$months = array('January','February','March','April',
'May','June','July','August',
'September','October','November','December');
$days = array(31,28,31,30,31,30,31,31,30,31,30,31);
$months_and_days = array();
for($i = 0 ; $i < count($months); $i++){
$months_and_days[$months[$i]] = $days[$i];
}
$ary = array($months,$days,$months_and_days);
foreach($ary as $value){
var_dump($value);
echo "<br /><br />";
}
foreach($ary as $a){
while(list ($key,$value) = each($a)){
echo "$key => $value<br />";
}
echo "<br />";
}
?>
</body>
</html>ß
出力結果(ブラウザ)
php
array(12) { [0]=> string(7) "January" [1]=> string(8) "February" [2]=> string(5) "March" [3]=> string(5) "April" [4]=> string(3) "May" [5]=> string(4) "June" [6]=> string(4) "July" [7]=> string(6) "August" [8]=> string(9) "September" [9]=> string(7) "October" [10]=> string(8) "November" [11]=> string(8) "December" }
array(12) { [0]=> int(31) [1]=> int(28) [2]=> int(31) [3]=> int(30) [4]=> int(31) [5]=> int(30) [6]=> int(31) [7]=> int(31) [8]=> int(30) [9]=> int(31) [10]=> int(30) [11]=> int(31) }
array(12) { ["January"]=> int(31) ["February"]=> int(28) ["March"]=> int(31) ["April"]=> int(30) ["May"]=> int(31) ["June"]=> int(30) ["July"]=> int(31) ["August"]=> int(31) ["September"]=> int(30) ["October"]=> int(31) ["November"]=> int(30) ["December"]=> int(31) }
0 => January
1 => February
2 => March
3 => April
4 => May
5 => June
6 => July
7 => August
8 => September
9 => October
10 => November
11 => December
0 => 31
1 => 28
2 => 31
3 => 30
4 => 31
5 => 30
6 => 31
7 => 31
8 => 30
9 => 31
10 => 30
11 => 31
January => 31
February => 28
March => 31
April => 30
May => 31
June => 30
July => 31
August => 31
September => 30
October => 31
November => 30
December => 31
HTMLソース
<html>
<head>
<meta content='text/html; charset=UTF-8' http-equiv='Content-Type'/>
<title></title>
</head>
<body>
php<br /><br />array(12) {
[0]=>
string(7) "January"
[1]=>
string(8) "February"
[2]=>
string(5) "March"
[3]=>
string(5) "April"
[4]=>
string(3) "May"
[5]=>
string(4) "June"
[6]=>
string(4) "July"
[7]=>
string(6) "August"
[8]=>
string(9) "September"
[9]=>
string(7) "October"
[10]=>
string(8) "November"
[11]=>
string(8) "December"
}
<br /><br />array(12) {
[0]=>
int(31)
[1]=>
int(28)
[2]=>
int(31)
[3]=>
int(30)
[4]=>
int(31)
[5]=>
int(30)
[6]=>
int(31)
[7]=>
int(31)
[8]=>
int(30)
[9]=>
int(31)
[10]=>
int(30)
[11]=>
int(31)
}
<br /><br />array(12) {
["January"]=>
int(31)
["February"]=>
int(28)
["March"]=>
int(31)
["April"]=>
int(30)
["May"]=>
int(31)
["June"]=>
int(30)
["July"]=>
int(31)
["August"]=>
int(31)
["September"]=>
int(30)
["October"]=>
int(31)
["November"]=>
int(30)
["December"]=>
int(31)
}
<br /><br />0 => January<br />1 => February<br />2 => March<br />3 => April<br />4 => May<br />5 => June<br />6 => July<br />7 => August<br />8 => September<br />9 => October<br />10 => November<br />11 => December<br /><br />0 => 31<br />1 => 28<br />2 => 31<br />3 => 30<br />4 => 31<br />5 => 30<br />6 => 31<br />7 => 31<br />8 => 30<br />9 => 31<br />10 => 30<br />11 => 31<br /><br />January => 31<br />February => 28<br />March => 31<br />April => 30<br />May => 31<br />June => 30<br />July => 31<br />August => 31<br />September => 30<br />October => 31<br />November => 30<br />December => 31<br /><br /> </body>
</html>
併せて読んでいる書籍。
Pythonの学習が1周したら上記の2冊を順に取り組む計画。それまではひたすら復習！
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