/app/libs/json.minify.php

<?php



/*! JSON.minify()

	v0.1 (c) Kyle Simpson

	MIT License

	https://raw.github.com/getify/JSON.minify/master/minify.json.php

*/



function json_minify($json) {

	$tokenizer = "/\"|(\/\*)|(\*\/)|(\/\/)|\n|\r/";

	$in_string = false;

	$in_multiline_comment = false;

	$in_singleline_comment = false;

	$new_str = array();

	$from = 0;

	$lastIndex = 0;



	while (preg_match($tokenizer,$json,$tmp,PREG_OFFSET_CAPTURE,$lastIndex)) {

		$tmp = $tmp[0];

		$lastIndex = $tmp[1] + strlen($tmp[0]);

		$lc = substr($json,0,$lastIndex - strlen($tmp[0]));

		$rc = substr($json,$lastIndex);

		if (!$in_multiline_comment && !$in_singleline_comment) {

			$tmp2 = substr($lc,$from);

			if (!$in_string) {

				$tmp2 = preg_replace("/(\n|\r|\s)*/","",$tmp2);

			}

			$new_str[] = $tmp2;

		}

		$from = $lastIndex;



		if ($tmp[0] == "\"" && !$in_multiline_comment && !$in_singleline_comment) {

			preg_match("/(\\\\)*$/",$lc,$tmp2);

			if (!$in_string || !$tmp2 || (strlen($tmp2[0]) % 2) == 0) {	// start of string with ", or unescaped " character found to end string

				$in_string = !$in_string;

			}

			$from--; // include " character in next catch

			$rc = substr($json,$from);

		}

		else if ($tmp[0] == "/*" && !$in_string && !$in_multiline_comment && !$in_singleline_comment) {

			$in_multiline_comment = true;

		}

		else if ($tmp[0] == "*/" && !$in_string && $in_multiline_comment && !$in_singleline_comment) {

			$in_multiline_comment = false;

		}

		else if ($tmp[0] == "//" && !$in_string && !$in_multiline_comment && !$in_singleline_comment) {

			$in_singleline_comment = true;

		}

		else if (($tmp[0] == "\n" || $tmp[0] == "\r") && !$in_string && !$in_multiline_comment && $in_singleline_comment) {

			$in_singleline_comment = false;

		}

		else if (!$in_multiline_comment && !$in_singleline_comment && !(preg_match("/\n|\r|\s/",$tmp[0]))) {

			$new_str[] = $tmp[0];

		}

	}

	$new_str[] = $rc;

	return implode("",$new_str);

}