有些字符在HTML里有特别的含义，比如小于号<就表示HTML Tag的开始，这个小于号是不显示在我们最终看到的网页里的。那如果我们希望在网页中显示一个小于号，该怎么办呢？这就要说到HTML字符实体(HTML Character Entities)了。
有些字符在HTML里有特别的含义，比如小于号<就表示HTML Tag的开始，这个小于号是不显示在我们最终看到的网页里的。那如果我们希望在网页中显示一个小于号，该怎么办呢？
这就要说到HTML字符实体(HTML Character Entities)了。
一个字符实体(Character Entity)分成三部分：第一部分是一个&符号，英文叫ampersand；第二部分是实体(Entity)名字或者是#加上实体(Entity)编号；第三部分是一个分号。
比如，要显示小于号，就可以写\<或者<。
用实体(Entity)名字的好处是比较好理解，一看lt，大概就猜出是less than的意思，但是其劣势在于并不是所有的浏览器都支持最新的Entity名字。而实体(Entity)编号，各种浏览器都能处理。
注意：Entity是区分大小写的。
通常情况下，HTML会自动截去多余的空格。不管你加多少空格，都被看做一个空格。比如你在两个字之间加了10个空格，HTML会截去9个空格，只保留一个。为了在网页中增加空格，你可以使用 表示空格。
显示结果 说明 Entity Name Entity Number
显示一个空格  
< 小于 < <
> 大于 > >
& &符号 & &
" 双引号 " "
' 单引号 '</p>
<h2>其他常用的字符实体(Character Entities)</h2>
<pre class="brush:php;toolbar:false">结果 说明 Entity Name Entity Number
© 版权 © ©
® 注册商标 ® ®
× 乘号 × ×
÷ 除号 &pide; ÷字符 十进制字符编号 实体名字 说明
--- � --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
--- 	 --- 制表符Horizontal tab
--- --- 换行Line feed
---  --- 未使用Unused
---  --- 未使用Unused
--- --- 回车Carriage Return
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
---  --- 未使用Unused
  --- Space
! ! --- 惊叹号Exclamation mark
" " " 双引号Quotation mark
# # --- 数字标志Number sign
$ $ --- 美元标志Dollar sign
% % --- 百分号Percent sign
& & & Ampersand
' ' --- 单引号Apostrophe
( ( --- 小括号左边部分Left parenthesis
) ) --- 小括号右边部分Right parenthesis
* * --- 星号Asterisk
+ + --- 加号Plus sign
, , --- 逗号Comma
- - --- 连字号Hyphen
. . --- 句号Period (fullstop)
/ / --- 斜杠Solidus (slash)
0 0 --- 数字0 Digit 0
1 1 --- 数字1 Digit 1
2 2 --- 数字2 Digit 2
3 3 --- 数字3 Digit 3
4 4 --- 数字4 Digit 4
5 5 --- 数字5 Digit 5
6 6 --- 数字6 Digit 6
7 7 --- 数字7 Digit 7
8 8 --- 数字8 Digit 8
9 9 --- 数字9 Digit 9
: : --- 冒号Colon
; ; --- 分号Semicolon
< < < 小于号Less than
= = --- 等于符号Equals sign
> > > 大于号Greater than
? ? --- 问号Question mark
@ @ --- Commercial at
A A --- 大写A Capital A
B B --- 大写B Capital B
C C --- 大写C Capital C
D D --- 大写D Capital D
E E --- 大写E Capital E
F F --- 大写F Capital F
G G --- 大写G Capital G
H H --- 大写H Capital H
I I --- 大写J Capital I
J J --- 大写K Capital J
K K --- 大写L Capital K
L L --- 大写K Capital L
M M --- 大写M Capital M
N N --- 大写N Capital N
O O --- 大写O Capital O
P P --- 大写P Capital P
Q Q --- 大写Q Capital Q
R R --- 大写R Capital R
S S --- 大写S Capital S
T T --- 大写T Capital T
U U --- 大写U Capital U
V V --- 大写V Capital V
W W --- 大写W Capital W
X X --- 大写X Capital X
Y Y --- 大写Y Capital Y
Z Z --- 大写Z Capital Z
[ [ --- 中括号左边部分Left square bracket
\ \ --- 反斜杠Reverse solidus (backslash)
] ] --- 中括号右边部分Right square bracket
^ ^ --- Caret
_ _ --- 下划线Horizontal bar (underscore)
` ` --- 尖重音符Acute accent
a a --- 小写a Small a
b b --- 小写b Small b
c c --- 小写c Small c
d d --- 小写d Small d
e e --- 小写e Small e
f f --- 小写f Small f
g g --- 小写g Small g
h h --- 小写h Small h
i i --- 小写i Small i
j j --- 小写j Small j
k k --- 小写k Small k
l l --- 小写l Small l
m m --- 小写m Small m
n n --- 小写n Small n
o o --- 小写o Small o
p p --- 小写p Small p
q q --- 小写q Small q
r r --- 小写r Small r
s s --- 小写s Small s
t t --- 小写t Small t
u u --- 小写u Small u
v v --- 小写v Small v
w w --- 小写w Small w
x x --- 小写x Small x
y y --- 小写y Small y
z z --- 小写z Small z
{ { --- 大括号左边部分Left curly brace
| | --- 竖线Vertical bar
} } --- 大括号右边部分Right curly brace
~ ~ --- Tilde
---  --- 未使用Unused
  空格Nonbreaking space
¡ ¡ ¡ Inverted exclamation
¢ ¢ ¢ 货币分标志Cent sign
£ £ £ 英镑标志Pound sterling
¤ ¤ ¤ 通用货币标志General currency sign
¥ ¥ ¥ 日元标志Yen sign
¦ ¦ ¦ or &brkbar; 断竖线Broken vertical bar
§ § § 分节号Section sign
¨ ¨ ¨ or ¨ 变音符号Umlaut
© © © 版权标志Copyright
ª ª ª Feminine ordinal
« « « Left angle quote, guillemet left
¬ ¬ ¬ Not sign
­ ­ Soft hyphen
® ® ® 注册商标标志Registered trademark
¯ ¯ ¯ or &hibar; 长音符号Macron accent
° ° ° 度数标志Degree sign
± ± ± 加或减Plus or minus
² ² ² 上标2 Superscript two
³ ³ ³ 上标3 Superscript three
´ ´ ´ 尖重音符Acute accent
µ µ µ Micro sign
¶ ¶ ¶ Paragraph sign
· · · Middle dot
¸ ¸ ¸ Cedilla
¹ ¹ ¹ 上标1 Superscript one
º º º Masculine ordinal
» » » Right angle quote, guillemet right
¼ ¼ ¼ 四分之一Fraction one-fourth
½ ½ ½ 二分之一Fraction one-half
¾ ¾ ¾ 四分之三Fraction three-fourths
¿ ¿ ¿ Inverted question mark
À À À Capital A, grave accent
Á Á Á Capital A, acute accent
   Capital A, circumflex
à à à Capital A, tilde
Ä Ä Ä Capital A, di?esis / umlaut
Å Å Å Capital A, ring
Æ Æ Æ Capital AE ligature
Ç Ç Ç Capital C, cedilla
È È È Capital E, grave accent
É É É Capital E, acute accent
Ê Ê Ê Capital E, circumflex
Ë Ë Ë Capital E, di?esis / umlaut
Ì Ì Ì Capital I, grave accent
Í Í Í Capital I, acute accent
Î Î Î Capital I, circumflex
Ï Ï Ï Capital I, di?esis / umlaut
Ð Ð Ð Capital Eth, Icelandic
Ñ Ñ Ñ Capital N, tilde
Ò Ò Ò Capital O, grave accent
Ó Ó Ó Capital O, acute accent
Ô Ô Ô Capital O, circumflex
Õ Õ Õ Capital O, tilde
Ö Ö Ö Capital O, di?esis / umlaut
× × × 乘号Multiply sign
Ø Ø Ø Capital O, slash
Ù Ù Ù Capital U, grave accent
Ú Ú Ú Capital U, acute accent
Û Û Û Capital U, circumflex
Ü Ü Ü Capital U, di?esis / umlaut
Ý Ý Ý Capital Y, acute accent
Þ Þ Þ Capital Thorn, Icelandic
ß ß ß Small sharp s, German sz
à à à Small a, grave accent
á á á Small a, acute accent
â â â Small a, circumflex
ã ã ã Small a, tilde
ä ä ä Small a, di?esis / umlaut
å å å Small a, ring
æ æ æ Small ae ligature
ç ç ç Small c, cedilla
è è è Small e, grave accent
é é é Small e, acute accent
ê ê ê Small e, circumflex
ë ë ë Small e, di?esis / umlaut
ì ì ì Small i, grave accent
í í í Small i, acute accent
î î î Small i, circumflex
ï ï ï Small i, di?esis / umlaut
ð ð ð Small eth, Icelandic
ñ ñ ñ Small n, tilde
ò ò ò Small o, grave accent
ó ó ó Small o, acute accent
ô ô ô Small o, circumflex
õ õ õ Small o, tilde
ö ö ö Small o, di?esis / umlaut
÷ ÷ &pide; 除号pision sign
ø ø ø Small o, slash
ù ù ù Small u, grave accent
ú ú ú Small u, acute accent
û û û Small u, circumflex
ü ü ü Small u, di?esis / umlaut
ý ý ý Small y, acute accent
þ þ þ Small thorn, Icelandic
ÿ ÿ ÿ Small y, umlaut更多HTML特殊字符显示 相关文章请关注PHP中文网！
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