Eliminar espacios repetidos y conservar saltos de linea

[alvaro_trewhela]

Prueba con:

Código PHP:

<?php
 
function trimInside($t){
$t = trim($t);
    while(strpos($t, "  ") !== false){
    $t = str_replace("  ", " ", $t);
    }
return $t;
}
 
 
$file = "test.txt";
$fo = fopen($file,"r");
$fr = fread($fo,filesize($file));
fclose($fo);
 
 
?>
<textarea style="width:300px; height:300px;"><?php echo $fr; ?></textarea><br/>
<textarea style="width:300px; height:300px;"><?php echo trimInside($fr); ?></textarea><br/>