问题
I'm having this problem where I can't manage to accomplish this simple script. Basically, I want to take a post from a form, assign it to a variable, and then append the variable to a preexisting example.txt file. I apologize for the lack of examples, I switched to my phone after I went out to dinner with my inlaws. Could anyone post a simple example andd allow me to build off of that foundation? thanks in advance
回答1:
The following should give you a foundation to start.
<?php
// Check to see if the form was submitted
if(isset($_POST['action']) && $_POST['action'] == 'add'){
$file = 'example.txt';
// Open the file to get existing content
$current = file_get_contents($file);
// Append a new person to the file
$current .= $_POST['test'];
// Write the contents back to the file
file_put_contents($file, $current);
}
?>
<form method="POST">
<!-- This becomes PHP variable $_POST['test'] -->
<input type="text" name="test" />
<input type="hidden" name="action" value="add" />
<input type="submit" value="Add"/>
</form>
Check out http://us3.php.net/file_put_contents for more information.
回答2:
If your html form has a text field like this
<input type="text" name="firstName" value="Name">
you can access that value in your php script using
$_POST['firstName'];.
If you want to append text in php, you can simply do it using "."
Ex: $post_string = 'Ex:' . $post_string;
来源：https://stackoverflow.com/questions/21272192/php-post-to-variable-and-then-append-to-txt