prova questo costruttore :
class LinkExtractor {
/* private Array variable: $linkReg [ contains pregs to parse links ]*/
var $linkReg = Array(
"/(?i)<a([^\a]+?)href='([^\a]+?)'/i",
"/(?i)<a([^\a]+?)href=\"([^\a]+?)\"/i",
"/(?i)<a([^\a]+?)href=([^\a]+?)[ |>]/i"
);
/**
* Public constructor.
* Create a global Array with no value, used for parsing
* and an internal array with valid pregs for links parsing.
*/
function LinkExtractor() {
global $__linkExtractor_linkRecipient;
$__linkExtractor_linkRecipient = Array();
}
/**
* Private method, popolate internal Array with preg matches
* .
* @Param String String to push into internal array
* @Return nothing
*/
function __manageLinkRecipient( $replacement ) {
global $__linkExtractor_linkRecipient;
array_push( $__linkExtractor_linkRecipient, htmlspecialchars( $replacement[2] ) );
}
/**
* Private method, call preg_replace_callback function with string.
* .
* @Param String String to parse
* @Return nothing
*/
function __callBackCaller( $st ) {
preg_replace_callback( $this->linkReg, Array( &$this, '__manageLinkRecipient' ), $st );
}
/**
* Public method, read remote page or file and parse them
* .
* @Param String valid url address to parse
* @Return Boolean true if readed , false in other cases
*/
function parseUrl( $url ) {
if( @$fp = fopen( $url, "r" ) ) {
$st = '';
while( $text = fread( $fp, 8192 ) ) {
$st .= $text;
}
fclose( $fp );
$this->__callBackCaller( $st );
return true;
}
return false;
}
/**
* Public method, parse links in a file
* .
* @Param String string to parse
* @Return nothing
*/
function parseFile( $st ) {
return $this->parseUrl( $st );
}
/**
* Public method, parse links in a string
* .
* @Param String string to parse
* @Return nothing
*/
function parseString( $st ) {
$this->__callBackCaller( $st );
}
/**
* Public method, return an array with all found links
* .
* @Param no no params need
* @Return Array Array with all links ( if there're )
*/
function getLinks() {
global $__linkExtractor_linkRecipient;
return $__linkExtractor_linkRecipient;
}
}
function linkExtractor( $what, $url = false ) {
$myLinks = &new LinkExtractor();
if( $url == false ) {
$myLinks->parseString( $what );
}
elseif( $url == true ) {
if( $myLinks->parseUrl( $what ) == false ) {
return false;
}
}
return $myLinks->getLinks();
}
// EXAMPLE
$url = "http://www.php.net/"; // site to parse
$arrayLinks = &linkExtractor( $url, true );
if( $arrayLinks != false ) {
for( $a = 0, $b = count( $arrayLinks ); $a < $b; $a++ ) {
echo $arrayLinks[$a]."
";
}
}
```[/img]
