RE: [PHP-DEV] enhance fget to accept a callback

On 23 November 2014 23:36:30 GMT, Bill Salak <bill@devtemple.com> wrote: >The callback would be given the string as returned by fgets today. The >functional equivalent to fgetjson today is handled by something like >$handle = fopen(~some file~, 'r'); >while (($data = fgets($handle)) !== FALSE) { > $data = json_decode($data, true); > ...other stuff... >} >and would change to >$handle = fopen(~some file~, 'r'); >$decode = json_decode($data, true); >while (($data = fgets($handle,0,$decode)) !== FALSE) { > ...other stuff... >} Since you need a function reference for the callback, you'd actually need a closure to capture the options: $decode = function($data) { return json_decode($data, true); }; This is actually more effort and code than the existing version, so I'm not sure what is gained. Either way, the likelihood is you'd want to wrap this into a user function. As I mentioned earlier, making it into an Iterator is often useful, and potentially as simple as a generator function a bit like this: function fjsoniterator($fh) { if ( ! feof($fh) ) { yield json_decode(fgets($fh), true); } } $fh = fopen(...); foreach ( fjsoniterator($fh) as $data ) { ... } Regards, -- Rowan Collins [IMSoP]