In English we say hello but in Arabic we say asalam wa alikum.
There are actually a variety of ways to say "hello" in Arabic, depending on the country.
Salaam 3alaykum (سلام عليكم) is the most formal of these and can be used anywhere. The response is Wa-3alaykum as-salaam (وعليكم السلام).
Merhaban (مرحبا) is more casual, but still relatively formal and has more of a "welcome-vibe" to it. It is used mostly in the Levant and Iraq.
Ahlan (أهلا) or Ahlan Wa-Sahlan (أهلا وسهلا) are much more casual and are used almost everywhere.
Another answer:
Hello in Arabic is (marhaba), or in modern Arabic (marhaban).
Hi or Hello: Salam
Using http://www.worldlingo.com/en/products_services/worldlingo_translator.HTML, "hello and welcome" is translated as "مرØبا وترØيب", from English to Arabic, and is pronounced as "marhaban WA tarheeb".
Hala/Ahlan /Marhaba /Ahlan WA sahlan beeki
The most common way to say this phrase is simply Ahlan WA sahlan
merhaba, sadiqi (to a male friend)
Marhaba. hatha sadeeqee . Marhaba
You can say le-le or liyo.https://www.livinglanguage.com/community/discussion/315/saying-youre-welcome-in-japanese-not-recommended
Ehlan wasehlan
You just said it yourself. If you want to say it in another language, you need to say which one.
youre a great friend
Ahlan bika fe alwaha
You say "shukran" which means "thank you".
Arabic is the main language spoken in Egypt. So in Arabic 'you're welcome' is: Fnḩn Nrḩb Bk or فنحن نرحب بك
Hala / Marhaba : hi Tafadal /Ahlan WA sahlan : welcome
Do you miss me my dear friend : you can say this sentence in one word --> eshta'atelliiii ( in Arabic ). and it is written this way : اشتقتلي
Tafadal is Arabic phrase and it says "welcome" or "here you are". It can be used in the situation only for to offer something for someone.
"Ma ata tzarih?" if youre talking to a male. (מה אתה צריך?) "Ma at tzriha?" if youre talking to a female. (מה את צריכה?)
Translation: 3andi sadiq (عندي صديق)