PHP collection program commonly used functions_PHP tutorial

Current script URL
function get_php_url(){
if(!empty($_SERVER["REQUEST_URI"])){
$scriptName = $_SERVER["REQUEST_URI"];
$nowurl = $scriptName;
}else{
$scriptName = $_SERVER["PHP_SELF"];
if(empty($_SERVER["QUERY_STRING"])) $nowurl = $scriptName;
else $ nowurl = $scriptName."?".$_SERVER["QUERY_STRING"];
}
return $nowurl;
}
//Convert full-width numbers to half-width numbers
function GetAlabNum( $fnum){
$nums = array("0","1","2","3","4","5","6","7","8","9 ");
$fnums = "0123456789";
for($i=0;$i<=9;$i++) $fnum = str_replace($nums[$i],$fnums[$i] ,$fnum);
$fnum = ereg_replace("[^0-9.]|^0{1,}","",$fnum);
if($fnum=="") $ fnum=0;
return $fnum;
}
//Remove HTML tags
function Text2Html($txt){
$txt = str_replace(" ","　",$txt) ;
$txt = str_replace("<","<",$txt);
$txt = str_replace(">",">",$txt);
$txt = preg_replace("/[rn]{1,}/isU","
rn",$txt);
return $txt;
}
//Clear HTML tag
function ClearHtml($str){
$str = str_replace('<','<',$str);
$str = str_replace('>','>',$ str);
return $str;
}
//Convert relative path to absolute path
function relative_to_absolute($content, $feed_url) {
preg_match('/(http|https| ftp):///', $feed_url, $protocol);
$server_url = preg_replace("/(http|https|ftp|news):///", "", $feed_url);
$server_url = preg_replace("//.*/", "", $server_url);
if ($server_url == '') {
return $content;
}
if (isset ($protocol[0])) {
$new_content = preg_replace('/href="//', 'href="'.$protocol[0].$server_url.'/', $content);
$new_content = preg_replace('/src="//', 'src="'.$protocol[0].$server_url.'/', $new_content);
} else {
$new_content = $content;
}
return $new_content;
}
//Get all links
function get_all_url($code){
preg_match_all('/"' ]+)["|']?s*[^>]*>([^>]+)/i',$ code,$arr);
return array('name'=>$arr[2],'url'=>$arr[1]);
}
//Get the specified tag Contents of
function get_tag_data($str, $start, $end){
if ( $start == '' || $end == '' ){
return;
}
$str = explode($start, $str);
$str = explode($end, $str[1]);
return $str[0];
}
// Convert each row of the HTML table to a CSV format array
function get_tr_array($table) {
$table = preg_replace("']*?>'si",'"', $table);
$table = str_replace("",'",',$table);
$table = str_replace("","{tr}" ,$table);
//Remove HTML tags
$table = preg_replace("'<[/!]*?[^<>]*?>'si","",$ table);
//Remove whitespace characters
$table = preg_replace("'([rn])[s]+'","",$table);
$table = str_replace(" " ,"",$table);
$table = str_replace(" ","",$table);
$table = explode(",{tr}",$table);
array_pop( $table);
return $table;
}
//Convert each row and column of the HTML table into an array and collect table data
function get_td_array($table) {
$table = preg_replace("']*?>'si","",$table);
$table = preg_replace("']*?> 'si","",$table);
$table = preg_replace("']*?>'si","",$table);
$table = str_replace("","{tr}",$table);
$table = str_replace("","{td}",$table);
/ /Remove HTML tags
$table = preg_replace("'<[/!]*?[^<>]*?>'si","",$table);
//Remove White space characters
$table = preg_replace("'([rn])[s]+'","",$table);
$table = str_replace(" ","",$table);
$table = str_replace(" ","",$table);
$table = explode('{tr}', $table);
array_pop($table);
foreach ($ table as $key=>$tr) {
$td = explode('{td}', $tr);
array_pop($td);
$td_array[] = $td;
}
return $td_array;
}
//Return all words in the string $distinct=true to remove duplicates
function split_en_str($str,$distinct=true) {
preg_match_all('/([a-zA-Z]+)/',$str,$match);
if ($distinct == true) {
$match[1] = array_unique($match[ 1]);
}
sort($match[1]);
return $match[1];
}

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