php - What is the meaning of $c1 = ($c1 & 0x03) << 4? -


विशेष रूप से, ($ c1 & amp; 0x03) & lt; & lt; 4 क्या?

क्या 0x03 हेक्स अंकन है?

यह करता है मतलब पहला ऑपरेशन तार्किक रूप से और हेक्स मान 0x03 के साथ है (जो हेक्स में 3 या (0011) बाइनरी में है)। और फिर Shift 4 places.example

छोड़ दिया $ c = 34 है। $ C & amp; 3 (100010 बिटवियस और 000011) जो आपको (000010) देता है और फिर यह बाईं ओर 4 अंक ले जाता है और $ c अर्थात् (100000) या दशमलव में 32 को नया मान बहाल करता है।

आशा है कि यह है सहायक।

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