??, ??? ? ??????? ?? ???? ?? ????? ???? ? ?? ??? ?????. ??? ??????? ???? ?? ???? ?????.

?? PHP?? ??? ??? ?? ????. ??? ?? ????? ???? ? ?? ??? ???? ??? ????.

1. ?? ??? ??? ?? ??

2. ?? ??? ??? ?? ??

3. ??? ??? ?? ??

? ??? ?? ??? ??? ??? ?????????.

1. ??? ??? ?? 2??? ?? 3???? ??????. ???? ??? ??, ?? ? 1??? ???? ??? ? ?? ???? ??? ? ????. ??? ?? ??? ??? ? ????

2. ??? ?? ?? ??? ? ??? ??? ??? ????. ?? ?? GBK? UTF-8? ??

3. ??? ?? ??? ??? ???? ????. ???? ???? ???

??? ????? ???? ? ?? ??? ??? ??? ??? ???.

?? ??? ? ? ??? PHP ??? ??? ??? ?????.

http://php.net/manual/zh/

???. ? ??? ?? ???? ???????

?? ??? ?? ?? ??? ????. PHP ??? ????? ?? ??? ??? ?? ????? ???? ????? ??????.

?? ???? ??????? ??? ?? ??? ???.

PHP ?? ??:

strip_tags()HTML, XML ? PHP ?? ??echo Strip_tags("Hello addcslashes()???? ??? ???????? ??? ?? ?? ????? ?????. $str = ""?????, ? ??? John???. Adams." echo $str; echo addcslashes($str,'m');"stripcslashes()addcslashes() ????? ??? ?? ??echo Stripcslashes("?????, ? ??? Kai Jim???.");addslashes() ?? ??? ??? ???? ?? ????? ?????$str = "John Adams? ??????";echo addlashes($str);stripslashes()addlashes()? ?? ??? ????? ??? ?? echo Stripslashes("John Adams? ??????");quotemeta() ???? ?? ??? ?? ?? ?? ????? ?????. $str = "Hello world. (? ?? ?????)"; echo quotemeta($str);chr()??? ?????. ??? ASCII ???echo chr(052);ord()???? ? ?? ??? ASCII ?? ?????echo ord("hello");strcasecmp()????? ???? ????. ? ??? ??echo strcasecmp ("Hello world!","HELLO WORLD!");strcmp()???? ?? ? ??? ?? strncmp()???? ?? n? ??? ?????(???? ??)mb_substr??? ?? ???? string mb_substr ( string $str , int $start [, int $ length = NULL [, string $encoding = mb_internal_encoding() ]] )mb_http_outputHTTP ?? ?? ??? ??/?????? mb_http_output( [ string $ ??? = mb_http_output() ] )mb_strlen???? ??? ?????mixed mb_strlen( string $str [, string $ ??? = mb_internal_encoding() ] )iconv???? ?? ?? ???? ?? ?????.string iconv ( string $in_charset , string $ out_charset , string $str )iconv_substr??? ?? ???? iconv_get_encodingiconv ?? ?? ?? ?? ????mb_substr_count??? ?? ?? ??mb_check_encoding??? ????? ???? ???? ??mb_strrpos????? ????? ???? ??? ?? mb_split?? ???? ???? ????? ??? ??parse_urlURL? ??? ??

??: mb_* ? iconv_*? ???? ?? ????? ??? ??? ? ????.

---

???? ?? GBK? utf-8??? ? ?? ??? ??? ?????.
GBK? utf-8? ?? ???? ?? ?? ?? ??? ???? ?????.

GBK? ?????, ? ?? ??? 2???? ????? ???? ????.
utf-8? 3?????, ?? ??? 3???? ????? ?????.

???? ??

<dl id="pumbv"></dl>

<rp id="pumbv"><video id="pumbv"></video></rp>

???	??	????
trim()	??? ?? ?? ?? ???? ?? ?? ??? ??? ?????	"$str = "rnHello World!rn"; echo Trim($str);
rtrim()	??? ???? ???? ?? ?? ??? ??? ?????	"$str = "Hello World!nn"; echo rtrim($str);"
chop()	rtrim()? ??	?? ??
ltrim( )	??? ???? ???? ?? ?? ??? ??? ?????	"$str = "rnHello World!"; echo ltrim($str);"
dirname( )	??? ???? ???? ?????(??? ??? ???????)	echo dirname("c:/testweb/home.php ");
str_pad()	??? ??? ???? Pall	$str = "Hello World"; echo str_pad($str ,20,". ");
str_repeat()	??? ??? ??	echo str_repeat(".",13);
str_split()	???? ??? ??	print_r(str_split("Hello"));
strrev()	??? ??	echo strrev("Hello World!");
wordwrap()	??? ??? ?? ??? ??	"$str = ""? ??? ?? ?: Supercalifragulistic""; echo wordwrap($str,15);"
str_shuffle()	???? ?? ??? ???? ????	echo str_shuffle("Hello World");
parse_str()	???? ??? ?? ??	"parse_str("id=23&name=John%20Adams",$myArray); print_r($myArray);"
number_format()	? ??? ?? ?? ??	"echo number_format("1000000"); echo number_format("1000000",2) ; echo number_format("1000000 ",2,"","","".");"
strtolower()	???? ???? ??	echo strtolower("Hello WORLD!");
strtoupper()	???? ???? ??	echo strtoupper ("Hello WORLD!");
ucfirst()	???? ? ??? ???? ?????.	echo ucfirst("hello world");
ucwords()	???? ?? ? ??? ? ?? ??? ???? ??	echo ucwords("hello world");
htmlentities()	??? HTML ???? ??	$str = ""John & 'Adams'""; echo htmlentities($str, ENT_COMPAT)
htmlspecialchars()	?? ??? ??? HTML ????? ??
nl2br()	n? ??	echo nl2br("? ?.n?? ?.");
		world!")
strncasecmp()	???? ?? n?? ???? ????? ???? ????.	int strncasecmp( string $str1 , string $str2 , int $len )
strnatcmp()	??? ??? ???? ?? ?? ??, ???? ??	int strnatcmp( string $str1 , string $str2 )
strnatcasecmp()	????? ???? ?? ??? ??? ???? ?? ?? ??	int strnatcasecmp( string $str1 , string $str2 )
chunk_split()	???? ?? ???? ???	str Chunk_split(str $body[,int $len[,str $end]] )
strtok()	??? ????	str strtok(str $str,str $token)
explode()	? ???? ???? ???? ?? ???? ??	arrayexplode(str $sep,str $str[,int $limit ])
implode()	??? ??, ?? ??? ??? ???? ?? ?? ???? ??	string implode( string $glue , array $pieces )
substr()	??? ????	string substr ( string $string , int $start [, int $length ] )
str_replace()	??? ?? ??, ???? ??	mix str_replace(mix $search,,mix $replace,mix $subject [,int &$num])
str_ireplace()	??? ?? ??, ???? ?? ? ?	mix str_ireplace ( mix $search , mix $replace , mix $subject [, int &$count ] )
substr_count()	?? ????? ???? ?? ??? ?????.	int substr_count ( string $haystack , string $needle [, int $offset = 0 [, int $length ]] )
substr_replace()	???? ???? ?? ???? ???	mixed substr_replace ( mix $string , string $replacement , int $start [, int $length ] )
similar_text()	??? ?????. ? ???? ??? ??	int ???_text(str $str1,str $str2)
strchr( )	???? ???? ?????. ?? ???? ???	string strstr ( string $str, string $needle, bool $before_needle)
strrchr()	?? ???? ??? ????? ???? ???	string strrchr( string $haystack , mix $needle )
stristr()	????? ???? ?? ?? ???? ???? ??? ???? ?????.	string stristr( string $haystack , mix $needle [, bool $before_needle = false ] )
strtr()	???? ?? ?? ??	string strtr ( string $str , string $from , string $to )
strpos()	????? ? ?? ?? ?? ?? ??	int strpos ( string $haystack , Mixed $needle [, int $offset = 0 ] )
stripos()	????? ????? ???? ?? ?? ???? ??? ????.	int Stripos( string $haystack , string $needle [, int $offset ] )
strrpos()	????? ??? ??? ?? ??	int strrpos ( string $haystack , string $needle [ , int $offset = 0 ] )
strripos()	????? ???? ?? ????? ??? ??? ??? ????.	int strripos ( string $haystack , string $needle [, int $offset ] )
strspn()	??? ?? ??? ??? ???? ? ?? ???? ?????	int strspn ( string $str1 , string $str2 [, int $start [, int $length ]] )
strcspn()	??? ?????. ???? ???? ?? ???	int strcspn ( string $str1 , string $str2 [, int $start [, int $length ]] )
str_word_count()	???? ??? ?? ? ??	mix str_word_count(str $str,[])
strlen()	??? ?? ??	int strlen(str $str)
count_chars()	??? ?? ??? ?? ?? ???(0..255)	mixed count_chars( string $string [, int $mode ] )
md5()	String md5 ???	$str = "?????"; echo md5($str)
iconv