PHP教學－仿WordPress編輯功能fopen開啟與編輯檔案內容

<?php
$file ="source.php";//文件來源
if($file != ""){
	if($_GET['acvite'] == "save"){//若目前狀態為save時
		$newcontent = stripslashes($_POST['newcontent']);
		$f = fopen($file, 'w');//以寫入方式開啟文件
		fwrite($f, $newcontent);//將新的資料寫入到原始的文件中
		header("Location: success.php?u=".$file); //寫入完成後導到success.php
	}else{
		$f = fopen($file, 'r');//以讀取方式開啟文件
		$content = fread($f, filesize($file));//將文件資料寫到$content中
		$content = htmlspecialchars($content);//轉換成html
	}
	fclose($f);	//關閉文件
}
?>
<?php if($_GET['acvite']=="access"){ ?>
<div style="border:soild 1px #333; background:#efefef; margin:10px 0; padding:7px;">更新完成!!</div>
<?php }?>
 
<a href="?u=source.php">載入來源</a>
<form id="form1" name="form1" method="post" action="index.php?u=<?php echo $_GET['u']?>&acvite=save">
  <textarea name="newcontent" style="width:400px; height:250px;"><?php echo $content; ?></textarea>
  <br>
  <input type="submit" name="button" id="button" value="儲存" />
</form>

<div style="width:220px; height:300px; border:solid 1px red; clear:both;">div01</div>
<div style="width:220px; height:300px; border:solid 1px red; clear:both;">div02</div>
<div style="width:220px; height:300px; border:solid 1px red; clear:both;">div02</div>

<?php 
$url="index.php?u=".$_GET['u']."&acvite=access";
header("Location: $url"); //完成後將網頁導回index.php
?>