$str = substr ( $clean, $start, $length + substr_count ( $str, chr ( 1 ))) $str = substr ( $clean, $start, $length ) $clean = preg_replace ( $pattern, chr ( 1 ), $string ) Specially usefull for show part of serach result included html and bbcode tags this is a script I wrote, whitch is very similar to substr, but it isn't takes html and bbcode for counting and it takes portion of string and show avoided (html & bbcode) tags too ] THEREFORE substr is the fastest of the three methods for getting the first few letters of a string. The experiment was run 3 times and averaged. The string was 6 paragraphs of Lorem Ipsum, and I was trying match the first two words. I wanted to work out the fastest way to get the first few characters from a string, so I ran the following experiment to compare substr, direct string access and strstr: "start boş, stop -, step dolu, step 1" } elseif (( ord ( substr ( $string, $i, 1 )) 128 ) & ( $count = $start )) Second character position is 1, and so on.ģ.$byte is one character length of your encoding, For example: utf-8 is "3", gb2312 and big5 is "2".you can use the function strlen() get it. ġ.Use it like this bite_str(string str, int start, int length ) Ģ.First character's position is 0. It can performs multi-byte safe on number of characters. This returns the portion of str specified by the start and length parameters. May be by following functions will be easier to extract the needed sub parts from a string: Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Predefined Attributes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session Security Filesystem Security Database Security Error Reporting User Submitted Data Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation GUI Extensions Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search
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