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for文でアルファベット

Posted at

大文字

for($i=0; $i<26; $i++){
    echo chr(65+$i);
}
// ABCDEFGHIJKLMNOPQRSTUVWXYZ

小文字

for($i=0; $i<26; $i++){
    echo chr(97+$i);
}
// abcdefghijklmnopqrstuvwxyz

chrは指定されたASCIIコードの文字を返す関数。

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