Search results for: "output errors"

What are some best practices for separating processing logic from output in PHP scripts to avoid "Headers already sent" errors?

When processing logic and output are mixed in PHP scripts, it can lead to "Headers already sent" errors because headers must be sent before any output...

How can PHP developers ensure that no output is generated before session_start() is called to avoid errors?

To ensure that no output is generated before calling session_start() in PHP, developers can use output buffering. This technique allows PHP to capture...

How can one troubleshoot issues with shell_exec not producing any output or errors in PHP?

If shell_exec is not producing any output or errors in PHP, it could be due to the command not being executed properly or the output being redirected...

How can separating HTML output from the download function in PHP prevent header modification errors?

When HTML output is mixed with the download function in PHP, it can cause header modification errors because the headers have already been sent when t...

How can PHP beginners avoid errors when integrating selected database content into calculations or output?

When integrating selected database content into calculations or output, PHP beginners should always sanitize and validate the data to prevent errors a...