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bioascii on 01/15/08

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Last Edited at 01/15/08 11:24am

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Limit string with/without relating words and from start/end

/ Published in: PHP

This function allows you to limit the amount of a string, like a sample from a post.
Create a file like function_lmt_txt.php and include it to use it.
Any comments to improve this are welcomed.

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/*
Description: Function to limit the text with or without relating words and from the start or end of the string
Usage:
$string = txtlmt($string, "30", "...", "1");

Variables:
$txt = string to delimited
$txt_limiter = max amount of letters in the string that should be seen
$txt_sep = the separator used to end the string (like string...)
$tipo
	1 - from start to end without relating words (when it reaches the $txt_limiter it breaks the string)
	2 - from start to end relating words (when it reaches the $txt_limiter it finds the next space to break the string)
	3 - from end to start without relating words (when it reaches the $txt_limiter it breaks the string)
	4 - from edn to start relating words (when it reaches the $txt_limiter it finds the next space to break the string)
*/

function txtlmt ($txt,$txt_limiter,$txt_sep,$tipo=0) {

if($tipo=="" OR $tipo==NULL OR $tipo==0) { $tipo = "2"; }

if (strlen($txt) > $txt_limiter) {
		// From start to end
		if($tipo=="1") { // Do not related words
			$txt = substr(put_accents($txt), 0, $txt_limiter) . $txt_sep;
		} elseif($tipo=="2") { // Relate words
			$txt = substr(put_accents($txt), 0, $txt_limiter);
			$txt = substr($txt, 0, strrpos($txt, " ")) . $txt_sep;

// From end to start
		} elseif($tipo=="3") { // Do not related words
			$txt = $txt_sep.substr(put_accents($txt), -$txt_limiter);
		} elseif($tipo=="4") { // Relate words
			$txt = substr(put_accents($txt), -$txt_limiter);
			$txt = $txt_sep.substr($txt, strpos($txt, " ")+1);
		}

$txt = strip_accents($txt);
		return $txt;

} else { return $txt; }

}

// #################################################################

// Function to convert strings to HTML characters
function strip_accents ($string) {
	$string = ereg_replace("(Ã¡)","Ã¡",$string);
	$string = ereg_replace("(Ã )","Ã ",$string);
	$string = ereg_replace("(Ã£)","Ã£",$string);
	$string = ereg_replace("(Ã³)","Ã³",$string);
	$string = ereg_replace("(Ãµ)","Ãµ",$string);
	$string = ereg_replace("(Ã©)","Ã©",$string);
	$string = ereg_replace("(Ãº)","Ãº",$string);
	$string = ereg_replace("(Ã)","Ã",$string);
	$string = ereg_replace("(Ã§)","Ã§",$string);
	$string = ereg_replace("(Ã)","Ã",$string);
	$string = ereg_replace("(Ã€)","Ã€",$string);
	$string = ereg_replace("(Ãƒ)","Ãƒ",$string);
	$string = ereg_replace("(Ã“)","Ã“",$string);
	$string = ereg_replace("(Ã•)","Ã•",$string);
	$string = ereg_replace("(Ã‰)","Ã‰",$string);
	$string = ereg_replace("(Ãš)","Ãš",$string);
	$string = ereg_replace("(Ã)","Ã",$string);
	$string = ereg_replace("(Ã‡)","Ã‡",$string);
	$string = ereg_replace("(\")",""",$string);
	$string = ereg_replace("(<)","<",$string);
	$string = ereg_replace("(>)",">",$string);
	$string = ereg_replace("(`)","'",$string);
	$string = ereg_replace("(')","'",$string);
	$string = ereg_replace("Âº","Âº",$string);
	$string = ereg_replace("Âª","Âª",$string);
	return $string;
}

// #################################################################

// Function to convert strings back to HTML characters
function put_accents ($string) {
	$string = ereg_replace("(Ã¡)","Ã¡",$string); 
	$string = ereg_replace("(Ã )","Ã ",$string); 
	$string = ereg_replace("(Ã£)","Ã£",$string); 
	$string = ereg_replace("(Ã³)","Ã³",$string); 
	$string = ereg_replace("(Ãµ)","Ãµ",$string); 
	$string = ereg_replace("(Ã©)","Ã©",$string); 
	$string = ereg_replace("(Ãº)","Ãº",$string); 
	$string = ereg_replace("(Ã)","Ã",$string); 
	$string = ereg_replace("(Ã§)","Ã§",$string); 
	$string = ereg_replace("(Ã)","Ã",$string); 
	$string = ereg_replace("(Ã€)","Ã€",$string); 
	$string = ereg_replace("(Ãƒ)","Ãƒ",$string); 
	$string = ereg_replace("(Ã“)","Ã“",$string); 
	$string = ereg_replace("(Ã•)","Ã•",$string); 
	$string = ereg_replace("(Ã‰)","Ã‰",$string); 
	$string = ereg_replace("(Ãš)","Ãš",$string); 
	$string = ereg_replace("(Ã)","Ã",$string); 
	$string = ereg_replace("(Ã‡)","Ã‡",$string); 
	$string = ereg_replace("(")","\"",$string);
	$string = ereg_replace("(<)","<",$string);
	$string = ereg_replace("(>)",">",$string);
	$string = ereg_replace("(')","'",$string);
	$string = ereg_replace("Âº","Âº",$string);
	$string = ereg_replace("Âª","Âª",$string);
	return $string;
}

// #################################################################

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