Search results for: "empty()"

How does the "placeholder" attribute differ from the "Value" attribute in PHP form fields?

The "placeholder" attribute is used to provide a hint or example of the expected input in a form field, which is displayed as a grayed-out text until...

How can the use of mysqli functions like mysqli_num_rows() and mysqli_free_result() lead to warnings in PHP scripts?

When using mysqli functions like mysqli_num_rows() and mysqli_free_result(), warnings can occur if the result set is not properly handled. If the resu...

What are the potential pitfalls of not assigning the dummy image (keinbild.jpg) in the PHP code?

If the dummy image (keinbild.jpg) is not assigned in the PHP code, there is a risk that an image placeholder will not be displayed when the actual ima...

What potential issues can arise when using the file() function to check for a newline character at the end of a file?

When using the file() function to check for a newline character at the end of a file, one potential issue that can arise is that the function may incl...

What is the significance of the error message "mysql_fetch_row(): supplied argument is not a valid MySQL result resource" in PHP?

The error message "mysql_fetch_row(): supplied argument is not a valid MySQL result resource" in PHP typically occurs when the query executed in the c...