chr()

(PHP 4, PHP 5, PHP 7)

返回指定的字符

说明

返回相对应于$ascii所指定的单个字符。

此函数与ord()是互补的。

参数

Ascii 码。

返回值

返回规定的字符。

范例

Example #1chr()例子

参见

• sprintf()Return a formatted string如何使用格式字符串%c。
• ord()
• 可以在此处找到 ASCII 码表：» http://www.asciitable.com。

Note that if the number is higher than 256, it will return the number mod 256.
For example :
chr(321)=A because A=65(256)

Another quick and short function to get unicode char by its code.

I spent hours looking for a function which would take a numeric HTML entity value and output the appropriate UTF-8 bytes. I found this at another site and only had to modify it slightly; so I don't take credit for this.

So for example:

Here is a function that's help me find what chr(number) outputs what character quicker than typing out 256 echo tags.

argument is automatically converted to integer, so chr('65') and chr(65) would both output the letter A

to remove the ASCII control characters (except "line feed" and "tab") :
$tab_chr = array() ;
for($control = 0; $control 
In addition to replacing Microsoft Windows smart quotes, as sgaston demonstrated on 2006-02-13, I replace all other Microsoft Windows characters using suggestions[1] published by character code specialist[2] Jukka Korpela.
[Editor's note:
%c is defined as: "Print the character belonging to the ascii code given"
chr() just gives a string, so you need to use %s, even if the string consists of only one character. This is consistent with other languages.
--Jeroen@php.net]
Learn from my mistake:
Do not expect this to work!

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