how to redirect to another page after if condition is satisfied in php? [closed]

Answer 1

You are already sending content before using the header directive.

From the PHP manul

Remember that header() must be called before any actual output is sent, either by normal HTML tags, blank lines in a file, or from PHP. It is a very common error to read code with include, or require, functions, or another file access function, and have spaces or empty lines that are output before header() is called. The same problem exists when using a single PHP/HTML file.

You should remove the echo before using header.

If you work with a lot of files and are not sure that there is no output before using header you should have a look at the Output Control Functions.

Answer 2

For a PHP redirect via header() call to succede it has to precede any page output, i.e. come before any other header(), print or echo statements. For example this will work.

<?php

header("Location: http://someurl.com");
exit;
?>

while this will not:

<?php
echo "Some text";
header("Location: http://someurl.com");
exit;
?>

If you already have output something on the page, you should redirect via Javascript like this:

<script type="text/javascript">
window.location = "http://someurl.com";
</script>