What does the expression $this->form->l_searchmode == 'standard' mean in PHP?

The expression $this->form->l_searchmode == 'standard' in PHP is checking if the value of the property l_searchmode of the object form is equal to the string 'standard'. This is a conditional check that is commonly used in PHP to determine the flow of the program based on certain conditions. If the condition is true, the code block inside the if statement will be executed.

if ($this->form->l_searchmode == 'standard') {
    // Code block to be executed if l_searchmode is 'standard'
    // Add your logic here
} else {
    // Code block to be executed if l_searchmode is not 'standard'
}