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sprintf

フォーマットされた文字列を返します
名前:sprintf
カテゴリ:
対応言語:php
一言説明:フォーマットされた文字列を変数に書き込みます。

例1

パーセント記号(%)シンボルをパラメーターとして渡された変数に置き換えます。

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$ number</span> <span class="token operator">=</span> <span class="token number">2</span> <span class="token punctuation">;</span>
<span class="token variable">$ str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"shanghai"</span> <span class="token punctuation">;</span>
<span class="token punctuation">$</span> <span class="token variable">txt</span> <span class="token operator">=</span> <span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token variable">"</span> <span class="token string double-quoted-string">%</span> <span class="token variable">s</span> <span class="token punctuation">。</span><span class="token punctuation">​</span><span class="token punctuation">​</span>
<span class="token keyword">echo</span> <span class="token variable">$ txt</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

自分で試してみてください

例2

フォーマット値%fを使用します。

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$ number</span> <span class="token operator">=</span> <span class="token number">123</span> <span class="token punctuation">;</span>
<span class="token variable">$ txt</span> <span class="token operator">=</span> <span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%f"</span> <span class="token punctuation">、</span> <span class="token variable">$ number</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token variable">$ txt</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

自分で試してみてください

例3

プレースホルダーを使用してください:

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$ number</span> <span class="token operator">=</span> <span class="token number">123</span> <span class="token punctuation">;</span>
<span class="token variable">$ txt</span> <span class="token operator">=</span> <span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"小数点以下の2つの場所:%1 \ $。2f
<br>少年なし:%1 \ $ u "</span> <span class="token punctuation">、</span> <span class="token variable">$ number</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token variable">$ txt</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

自分で試してみてください

例4

すべての可能な形式値のデモンストレーション:

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$ num1</span> <span class="token operator">=</span> <span class="token number">123456789</span> <span class="token punctuation">;</span>
<span class="token variable">$</span> <span class="token punctuation">num2</span> <span class="token operator">=</span> <span class="token operator">-123456789</span> <span class="token number">;</span>
<span class="token variable">$ char</span> <span class="token operator">=</span> <span class="token number">50</span> <span class="token punctuation">;</span> <span class="token comment">// ASCII文字50は2です</span>

<span class="token comment">//コメント:フォーマット値 "%%"はパーセントサインを返します</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% b =%b"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//バイナリ番号</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% c =%c"</span> <span class="token punctuation">、</span> <span class="token variable">$ char</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// ASCII文字</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% d =%d"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//署名された10進番号</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% d =%d"</span> <span class="token punctuation">、</span> <span class="token variable">$ num2</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//署名された10進番号</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% e =%e"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//科学表記(小文字)</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% e =%e"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//科学表記(CAPS)</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% u =%u"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//符号なし小数点以下(肯定)</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% u =%u"</span> <span class="token punctuation">、</span> <span class="token variable">$ num2</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//符号なし小数点以下(負)</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% f =%f"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//フローティングポイント番号(ローカル設定に応じて)</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% f =%f"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//フローティングポイント番号(ローカル設定に依存しない)</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% g =%g"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//%Eおよび%fより短い</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% g =%g"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//%Eおよび%fより短い</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% o =%o"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// octal番号</span>
<span class="token keyword">エコー</span><span class="token function">sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% s =%s"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// 弦</span>
<span class="token keyword">Echo</span> <span class="token function">Sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% x =%x"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// 16進数(小文字)</span>
<span class="token keyword">Echo</span> <span class="token function">Sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%% x =%x"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// 16進数(CAPS)</span>
<span class="token keyword">Echo</span> <span class="token function">Sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%%+d =%+d"</span> <span class="token punctuation">、</span> <span class="token variable">$ num1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//シンボル仕様(ポジティブ)</span>
<span class="token keyword">Echo</span> <span class="token function">Sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"%%+d =%+d"</span> <span class="token punctuation">、</span> <span class="token variable">$ num2</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">//シンボル仕様(負)</span>
<span class="token delimiter important">?></span></span>

自分で試してみてください

例5

文字列仕様のデモンストレーション:

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$ str1</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"hello"</span> <span class="token punctuation">;</span>
<span class="token variable">$ str2</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"hello world!"</span> <span class="token punctuation">;</span>

<span class="token keyword">Echo</span> <span class="token function">Sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"[%s]"</span> <span class="token punctuation">、</span> <span class="token variable">$ str1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span> <span class="token function">Sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"[%8S]"</span> <span class="token punctuation">、</span> <span class="token variable">$ str1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span> <span class="token function">Sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"[%-8S]"</span> <span class="token punctuation">、</span> <span class="token variable">$ str1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span> <span class="token function">Sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"[%08S]"</span> <span class="token punctuation">、</span> <span class="token variable">$ str1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span> <span class="token function">Sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"[% &#39;*8S]"</span> <span class="token punctuation">、</span> <span class="token variable">$ str1</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token keyword">Echo</span> <span class="token function">Sprintf</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"[%8.8s]"</span> <span class="token punctuation">、</span> <span class="token variable">$ str2</span> <span class="token punctuation">)</span> <span class="token operator">。</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

自分で試してみてください

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