纹身齐天大圣手臂:prajnaparamita-hridayam……这是何种语言？

arya-avalokiteshvaro bodhisattvo,
gambhiram prajnaparamitacharyam charamano vyavalokayati,
sma pancha-skandhas tams cha sva bhava shunyam
pasyati sma.
iha sariputra:
rupam shunyata,
shunyataiva rupam.
rupan na prithak shunyata,
shunyataya na prithag rupam.
yad rupam sa shunyata,
ya shunyata sa rupam.
evam eva
vedana, samjna, samskara,
vijnanam.
iha sariputra:
sarva dharmah shunyata-laksana,
anutpanna aniruddha,
amala aviamala,
anuna aparipurnah.
tasmaj chariputra:
shunyatayam na rupam,
na vedana, na samjna, na samskarah,
na vijnanam.
na chaksuh, shrotra, ghrana
jihva, kaya, manamsi；
na rupa, shabda, gandha,
rasa, sprastavaya dharmah,
na chaksur-dhatur
yavan na manovjnana-dhatuh.

na avidya,
na avidya-kshayo,
yavan na jara-maranam,
na jara-marana-kshayo.
na duhkha, samudaya,
nirodha, marga.
na jnanam,
na praptir, na apraptih.
tasmaj chariputra:
apraptitvad bodhisattvasya,
prajnaparamitam asritya,
viharaty achittavaranah.
chittavarana-nastitvad atrastro,
viparyasa atikranto,
nishtha nirvana praptah.
tryadhva vyavasthitah,
sarva buddhah,
prajnaparamitam asritya anuttaram
samyaksambodhim abhisambuddhah.
tasmaj jnatavyam:
prajnaparamita maha-mantro,
maha-vidya-mantro,
anuttara-mantro,
samasama-mantrah,
sarva duhkha prasamanah,
satyam amithyatvat.
prajnaparamitayam ukto mantrah.
tadyatha:
gate, gate
para gate
para sam gate
bodhi, svaha!
iti prajnaparamita-hridayam samaptam.

我所知道的是：这是按梵音标明的《般若菠萝密多心经》，只是不知道这算什么语言？因为有些拼法很奇怪，是按什么拼的？希望有识者赐教！
它的读音规律是怎样的？比如，"h"标在那里好象没有用，有些辅音好象也没有读出来，为何要多这样一个字母？为什么不象汉语拼音这样简捷方便？
还有，最好补充天城体、悉坛体的梵语原文，没有就算了，谢谢啊！