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Jan 14, 2010 
Yesterday, I kind-of neglected to show you an example of how perform basic file access. Today I will remedy that! File access can be done various ways and each has its own reasons. Here is an example of a CSV read:
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if (!is_file($name))
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die ("File is missing!");
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$file = fopen($name, "r");
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$news = array();
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while ($row = fgetcsv($file)) {
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$news[] = $row;
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}
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fclose($file);
This is perfect for storing flat-file news. Personally, I would prefer to use a database/caching if the news items change frequently.
Another example is when you want to read an entire of a file:
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$file = fopen("EULA.txt", "r");
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$contents = "";
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while ($line = fread($file)) {
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$contents .= $line;
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}
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fclose($file);
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// The easier way
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$contents = implode("\r\n", file("EULA.txt"));
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// The easiest way
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$contents = file_get_contents("EULA.txt");
PHP gives you options in this case: you can either read in each line with fread(), return an array of lines with file(), or get the entire contents with file_get_contents(). There is may also be an occasion where you would want to display the contents of a file right to the screen, you can either read in the entire file and echo it or this:
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// so the brower knows to act accordingly
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header("content-type: video/mpeg");
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readfile("videos/intro.mpeg");
Readfile() displays the file data right to the screen.
Tomorrow I’ll talk about directory access.
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