UrLSのリストからメタディスクリプションを取得するスクリプト（以下に貼り付け）があり、そのデータをCSV形式にエクスポートするエクスポート関数があります。
唯一の問題は、UTF-8セットの外に文字があると、エクスポート機能が停止することです。たとえば、-のような制御文字です。
これらの文字を削除するか、親しみやすいように置き換えるための最良の方法は何ですか？また、これをスクリプトにどのように組み込むのでしょうか。
<?php
error_reporting(E_ALL);
//ini_set( "display_errors", 0);
function parseUrl($url){
//Trim whitespace of the url to ensure proper checking.
$url = trim($url);
//Check if a protocol is specified at the beginning of the url. If it's not, prepend 'http://'.
if (!preg_match("~^(?:f|ht)tps?://~i", $url)) {
$url = "http://" . $url;
}
//Check if '/' is present at the end of the url. If not, append '/'.
if (substr($url, -1)!=="/"){
$url .= "/";
}
//Return the processed url.
return $url;
}
//If the form was submitted
if(isset($_GET['siteurl'])){
//Put every new line as a new entry in the array
$urls = explode("\n",trim($_GET["siteurl"]));
//Iterate through urls
foreach ($urls as $url) {
//Parse the url to add 'http://' at the beginning or '/' at the end if not already there, to avoid errors with the get_meta_tags function
$url = parseUrl($url);
//Get the meta data for each url
$tags = get_meta_tags($url);
//Check to see if the description tag was present and adjust output accordingly
$tags = NULL;
$tags = get_meta_tags($url);
if($tags)
echo "<tr><td>Description($url)</td><td>" .$tags['description']. "</td></tr>";
else
echo "<tr><td>Description($url)</td><td>No Meta Description</td></tr>";
}
}
?>
エクスポートコード：
// ExportHTMLTable
function ExportHTMLTable(tableId)
{
this.data=[];
this.table='';
this.tableId=tableId;
this.formId='exportForm';
this.configuration={url:'../export.php',dataType:'json'};
this.blockSend=0;
this.blockSize=100024;
this.requestNumber=0;
this.rowLastIndex=0;
this.cellLastIndex=0;
this.format='';
// Export
this.exportDocument=function()
{
this.reset();
if(!this.prepareData()) return(false);
this.send();
}
// Export to CSV
this.exportToCSV=function()
{
this.format='csv';
this.exportDocument();
}
// Export to XML
this.exportToXML=function()
{
this.format='xml';
this.exportDocument();
}
// Reset variables
this.reset=function()
{
this.data=[];
this.blockSend=0;
this.rowLastIndex=0;
this.cellLastIndex=0;
this.requestNumber=0;
}
// Get table
this.getTable=function()
{
this.table=$('#'+this.tableId);
if(this.table.length!=1) return(false);
return(true);
}
// Get data length
this.getDataLength=function()
{
var sum=0;
for(var rows in this.data)
sum+=this.data[rows].length;
return(sum);
}
// Remove form
this.removeForm=function()
{
var form=$('#'+this.formId);
if(form.length==1) form.remove();
}
// Create field
this.createField=function(name,value)
{
var field=document.createElement('input');
field.name=name;
field.value=value;
field.type='hidden';
return($(field));
}
// Prepare (extract from HTML table) data
this.prepareData=function()
{
if(!this.getTable()) return(false);
var self=this;
var r=0,c=0,tr=0,tc=0,length=0;
// Processing rows
this.table.children('tbody').children('tr').each(function()
{
c=0;
if(!$.isArray(self.data[r])) self.data[r]=[];
// Processing cells
$(this).children('th,td').each(function()
{
length=$(this).attr('colspan')+self.data[r].length;
for(tc=0;tc<length;tc++)
{
if(self.data[r][tc]) continue;
self.data[r][tc]=$(this).text();
}
length=r+$(this).attr('rowspan');
for(tr=r+1;tr<length;tr++)
{
if(!$.isArray(self.data[tr])) self.data[tr]=[];
self.data[tr][c]=$(this).text();
}
c++;
});
r++;
});
return(true);
}
// Send data
this.send=function()
{
var i=0,j=0;
this.requestNumber++;
this.removeForm();
var rowsNumber=this.data.length;
var form=$(document.createElement('form'));
form.attr('method','post');
form.attr('action',this.configuration.url);
for(i=this.rowLastIndex;i<rowsNumber;i++)
{
var cellsNumber=this.data[i].length;
for(j=this.cellLastIndex;j<cellsNumber;j++)
{
this.blockSend++;
var field=this.createField('exportTable['+i+']['+j+']',this.data[i][j]);
form.append(field);
if(this.blockSend>=(this.requestNumber*this.blockSize)) break;
}
if(this.blockSend>=(this.requestNumber*this.blockSize)) break;
this.cellLastIndex=0;
}
this.rowLastIndex=i;
this.cellLastIndex=j==0 ? 0 : j+1;
form.appendTo('body');
if(this.requestNumber==1)
form.append(this.createField('requestFirst',1));
if(this.blockSend==this.getDataLength())
{
form.append(this.createField('requestLast',1));
form.append(this.createField('format',this.format));
form.submit().remove();
}
else $.post(this.configuration.url,form.serialize(),$.delegate(this.send,this),'json');
}
}