Commonly used functions in PHP collection programs_PHP tutorial

Copy code The code is as follows:

//Get the 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 tags
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 content in the specified tag
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 whitespace 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 $distinct =true remove duplicates
function split_en_str($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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