htmlentities
将所有适用的字符转换为HTML实体-将字符转换为 HTML 转义字符
简体中文
简体中文
把字符转换为 HTML 实体：
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"<? W3S?h????>"</span><span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token function">htmlentities</span><span class="token punctuation">(</span><span class="token variable">$str</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>
以上代码的 HTML 输出如下（查看源代码）：
<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> <span class="token operator"><</span>? <span class="token constant">W3S</span>?h°°|§<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>
以上代码的浏览器输出：
<span class="token php language-php"><span class="token delimiter important"><?</span> <span class="token constant">W3S</span><span class="token operator">?</span>h<span class="token operator">??</span><span class="token operator">?</span><span class="token delimiter important">?></span></span>
把字符转换为 HTML 实体：
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Bill & 'Steve'"</span><span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token function">htmlentities</span><span class="token punctuation">(</span><span class="token variable">$str</span><span class="token punctuation">,</span> <span class="token constant">ENT_COMPAT</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 只转换双引号</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 function">htmlentities</span><span class="token punctuation">(</span><span class="token variable">$str</span><span class="token punctuation">,</span> <span class="token constant">ENT_QUOTES</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 转换双引号和单引号</span> <span class="token keyword">echo</span> <span class="token string double-quoted-string">"<br>"</span><span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token function">htmlentities</span><span class="token punctuation">(</span><span class="token variable">$str</span><span class="token punctuation">,</span> <span class="token constant">ENT_NOQUOTES</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 不转换任何引号</span> <span class="token delimiter important">?></span></span>
以上代码的 HTML 输出如下（查看源代码）：
<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> Bill <span class="token operator">&</span> <span class="token string single-quoted-string">'Steve'</span><span class="token operator"><</span>br<span class="token operator">></span> Bill <span class="token operator">&</span> <span class="token operator">&</span><span class="token comment">#039;Tarzan'<br></span> Bill <span class="token operator">&</span> <span class="token string single-quoted-string">'Steve'</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>
以上代码的浏览器输出：
Bill & 'Steve' Bill & 'Steve' Bill & 'Steve'
通过使用西欧字符集，把一些字符转换为 HTML 实体：
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"My name is ?yvind ?sane. I'm Norwegian."</span><span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token function">htmlentities</span><span class="token punctuation">(</span><span class="token variable">$str</span><span class="token punctuation">,</span> <span class="token constant">ENT_QUOTES</span><span class="token punctuation">,</span> <span class="token string double-quoted-string">"ISO-8859-1"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// Will only convert double quotes (not single quotes), and uses the character-set Western European</span> <span class="token delimiter important">?></span></span>
以上代码的 HTML 输出如下（查看源代码）：
<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> My name is ?yvind ?sane<span class="token operator">.</span> <span class="token constant">I</span>'m Norwegian<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>
以上代码的浏览器输出：
My name is ?yvind ?sane. I'm Norwegian.
chr
convert_cyr_string
stripcslashes
htmlentities
substr_compare
similar_text
strspn
sscanf
