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<?php $source = json_encode([new StdClass, "This is a test", "Foo's bar", 1, 5]); $escaped = implode("", array_map(function($char) { if (ctype_alnum($char)) { return $char; } $bytelen = mb_strlen($char, '8bit'); if ($bytelen === 1) { return '\\x' . str_pad(dechex(ord($char)), 2, '0', STR_PAD_LEFT); } $result = '\\u'; for ($i = 0; $i < $bytelen; $i++) { $result .= str_pad(dechex(ord($char[$i])), 2, '0', STR_PAD_LEFT); } return $result; }, str_split($source, 1))); var_dump($escaped);
Output for git.master, git.master_jit, rfc.property-hooks
string(88) "\x5b\x7b\x7d\x2c\x22This\x20is\x20a\x20test\x22\x2c\x22Foo\x27s\x20bar\x22\x2c1\x2c5\x5d"

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