substr_compare

實例

例子1

比較兩個字符串：

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hello world"</span> <span class="token punctuation">,</span> <span class="token number">0</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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例子2

比較兩個字符串，當string1中供比較的開始位置為6 時：

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"world"</span> <span class="token punctuation">,</span> <span class="token number">6</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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例子3

使用所有的參數：

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"or"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"ld"</span> <span class="token punctuation">,</span> <span class="token operator">-</span> <span class="token number">2</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"orl"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"OR"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">,</span> <span class="token constant boolean">TRUE</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"or"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">3</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"world"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"rl"</span> <span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">,</span> <span class="token number">2</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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例子4

不同的返回值：

 <span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello world!"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hello world!"</span> <span class="token punctuation">,</span> <span class="token number">0</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// 兩字符串相等</span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello world!"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hello"</span> <span class="token punctuation">,</span> <span class="token number">0</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// <i>string1</i>大於<i>string2</i></span>
<span class="token keyword">echo</span> <span class="token function">substr_compare</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hello world!"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hello world! Hello!"</span> <span class="token punctuation">,</span> <span class="token number">0</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// <i>string1</i>小於<i>string2</i></span>
<span class="token delimiter important">?></span></span>

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