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POHow to create form to update file using PHP?
 

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  1. POHow to create form to update file using PHP?
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    <p>I have written a PHP script which allows me to modify and update a file on a webpage, which works, but the script right now presents the entire contents of the file in a text area. I would like to extract just the string from the file and pre-populate it in a form text field (instead of a text area). </p> <p>Below are the two files I need to update. I would like to just update the IP addresses. So the form would ideally show that mail.helloworld.com current maps to "208.164.222.2" and populate that IP address in a form text field. Same idea for the /etc/postfix/main.cf file as shown below.</p> <p>/etc/hosts</p> <p>IPAddress Hostname Alias 127.0.0.1 localhost deep.openna.com 208.164.222.2 mail.helloworld.com mail 208.164.222.3 web.helloworld.com web</p> <p>/etc/postfix/main.cf</p> <p>relayhost= 192.168.1.10</p> <p>===</p> <p>Current working script using textarea:</p> <pre><code>&lt;form action="&lt;?php echo $PHP_SELF;?&gt;" method="post"&gt; &lt;textarea rows="13" cols="110" name="content"&gt; &lt;? $fn = "/etc/postfix/main.cf"; print htmlspecialchars(implode("",file($fn))); ?&gt; &lt;/textarea&gt;&lt;/br&gt; &lt;input id= "relayhost_button" type="submit" value="Update"&gt; &lt;/form&gt; &lt;? $fn = "/etc/postfix/main.cf"; $content = stripslashes($_POST['content']); $fp = fopen($fn,"w") or die ("Error opening file in write mode!"); fputs($fp,$content); fclose($fp) or die ("Error closing file!"); echo "&lt;meta http-equiv=\"refresh\" content=\"0; url=done.php\" /&gt;\n"; ?&gt; </code></pre> <p>Here is the current textarea based form:</p> <p><img src="https://i.stack.imgur.com/pHdEM.png" alt="enter image description here"></p> <p>New text field based form I want:</p> <p><img src="https://i.stack.imgur.com/W07dL.png" alt="enter image description here"> As always, thanks folks!</p>
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    1. COCan you clarify what you're asking? Are you saying you want to present each line of the text file as a separate form field? Or do you want it to go further and parse the file further so that each line is split into the left side and right side of the IP address assignment?
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      1. POHow to create form to update file using PHP?
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    2. COI posted a picture of what I have vs what I need. The main reason for wanting to only show the IP as an editable field is that I don't want users to change other parameters such as the domain name. Right now the textarea script presents the users with the ability to update any section of the text file so it is prone to user mistakes.
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      1. POHow to create form to update file using PHP?
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