Replace any consecutive character in the string with a corresponding character.

Replace any consecutive character in the string with a corresponding character. Read and replace any consecutive character in the string with a corresponding character ,? Php // 1, replace any space in the string with a $ str1 = "> <LINKhref =" http://www.php100.com//statics/style/headfloor_950_081205.css "type = te // 1. replace any space in the string with one
$ Str1 = 'a B C ';
Echo' '; &lt;BR&gt; &amp; nbsp; echo '1:'; &lt;BR&gt; &amp; nbsp; echo preg_replace ("/\ s +/", '', $ str1 ); &lt;BR&gt; &amp; nbsp; echo' ';
// 2. replace any consecutive character M in the string with one M
Echo '2 :';
$ Str1 = 'ammmbmmmmcmm ';
Echo preg_replace ("/M +/", 'M', $ str1 ).'
';
// 3. replace any consecutive character in the string with a corresponding character
Echo '3:
';
$ Str1 = 'acccb cccccggg ooo yyyfffxxxzzzzz ';
Echo $ str1 .'
';
$ Str2 = '';
$ I = 0;
For ($ I = 0; $ I {
$ Str2 = $ str2. $ str1 {$ I };
$ J = 1;
While ($ str1 {$ I }=$ str1 {$ I + $ j })
$ J ++;
$ I = $ I + $ j-1;
}
Echo $ str2 .'
';
// 4. replace any consecutive character in the string with a corresponding character
Echo '4:
';
$ Str1 = 'acccb cccccggg ooo yyyfffxxxzzzzz ';
Echo $ str1 .'
';
$ Len = strlen ($ str1 );
$ Str2 = $ str1 [0];
$ Ch = $ str2;
For ($ I = 1; $ I <$ len; $ I ++ ){
$ Ch2 = $ str1 [$ I];
If ($ ch! = $ Ch2 ){
$ Str2. = $ ch2;
$ Ch = $ ch2;
}
}
Echo $ str2 ."
";
// 5. replace any consecutive character in the string with a corresponding character
Echo '5:
';
$ Str1 = 'acccb cccccggg ooo yyyfffxxxzzzzz ';
Echo preg_replace ("/(.) \ 1 +/"," [url = file: // \ 1] \ 1 [/url] ", $ str1 ).'
';
?>