trim
從字符串的開頭和結尾去除空格(或其他字符)
中文(繁體)
中文(繁體)
移除字符串兩側的字符（"Hello" 中的"He" 以及"World" 中的"d!"）：
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Hello World!"</span> <span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token variable">$str</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">trim</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hed!"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>
移除字符串兩側的空格：
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token variable">$str</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 string double-quoted-string">"不使用trim: "</span> <span class="token operator">.</span> <span class="token variable">$str</span> <span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token string double-quoted-string">"使用trim: "</span> <span class="token operator">.</span> <span class="token function">trim</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>
以上代碼的HTML 輸出如下（請查看源代碼）：
<span class="token operator"><</span> <span class="token operator">!</span> <span class="token constant">DOCTYPE</span> html <span class="token operator">></span> <span class="token operator"><</span> html <span class="token operator">></span> <span class="token operator"><</span> body <span class="token operator">></span> 不使用trim <span class="token punctuation">:</span> Hello World <span class="token operator">!</span> <span class="token operator"><</span> br <span class="token operator">></span>使用trim <span class="token punctuation">:</span> Hello World <span class="token operator">!</span> <span class="token operator"><</span> <span class="token operator">/</span> body <span class="token operator">></span> <span class="token operator"><</span> <span class="token operator">/</span> html <span class="token operator">></span>
以上代碼的瀏覽器輸出如下：
不使用trim: Hello World! 使用trim: Hello World!
移除字符串兩側的換行符（\n）：
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"\n\n\nHello World!\n\n\n"</span> <span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token string double-quoted-string">"不使用trim: "</span> <span class="token operator">.</span> <span class="token variable">$str</span> <span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token string double-quoted-string">"使用trim: "</span> <span class="token operator">.</span> <span class="token function">trim</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>
以上代碼的HTML 輸出如下（請查看源代碼）：
<span class="token operator"><</span> <span class="token operator">!</span> <span class="token constant">DOCTYPE</span> html <span class="token operator">></span> <span class="token operator"><</span> html <span class="token operator">></span> <span class="token operator"><</span> body <span class="token operator">></span> 不使用trim <span class="token punctuation">:</span> Hello World <span class="token operator">!</span> <span class="token operator"><</span> br <span class="token operator">></span>使用trim <span class="token punctuation">:</span> Hello World <span class="token operator">!</span> <span class="token operator"><</span> <span class="token operator">/</span> body <span class="token operator">></span> <span class="token operator"><</span> <span class="token operator">/</span> html <span class="token operator">></span>
以上代碼的瀏覽器輸出如下：
不使用trim: Hello World! 使用trim: Hello World!
crypt
str_ireplace
strnatcasecmp
strcoll
htmlspecialchars_decode
md5
join
vprintf
