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when on "index.php", I do require_once("/all_fns.php").
"all_fns.php" itself requires files with paths relative to all_fns.php (itself).
My question is, should I write the paths on all_fns relative to all_fns.php or to index.php?
This is all very confusing to me and wanted to get it straight.
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Definition and Usage The require_once keyword is used to embed PHP code from another file. If the file is not found, a fatal error is thrown and the program stops. If the file was already included previously, this statement will not include it again.
The require() function is used to include a PHP file into another irrespective of whether the file is included before or not. The require_once() will first check whether a file is already included or not and if it is already included then it will not include it again.
The include (or require ) statement takes all the text/code/markup that exists in the specified file and copies it into the file that uses the include statement. Including files is very useful when you want to include the same PHP, HTML, or text on multiple pages of a website.
Absolute and Relative PathsAn absolute path refers to a file on the Internet using its full URL, e.g. "http://www.uvsc.edu/disted/php/webct/itr/index.php" A relative path assumes that the file is on the current server, e.g. "php/webct/itr/index. php".
They are treated as relative to index.php.
If you need to reference a file relative to the include, use
__DIR__."/relative/file.php";
They are relative to the getcwd().
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