Print functions in PHP

The important Print functions in PHP are..

echo()

• The echo() function outputs one or more strings.
• Syntax
• echo(strings)
• Note:
• The echo() function is not actually a function, so you are not required to use parentheses with it. However, if you want to pass more than one parameter to echo(), using parentheses will generate a parse error.
• The echo() function is slightly faster than print().

print():

• The print() function outputs one or more strings.
• Syntax
• print(strings)
• Note:
• The print() function is not actually a function, so you are not required to use parentheses with it.
• The print() function is slightly slower than echo().
• We can't print multiple statements using the print() function.

printf()

• The printf() function outputs a formatted string.
• Syntax
• printf(format,arg1,arg2,arg++)
• The arg1, arg2, ++ parameters will be inserted at percent (%) signs in the main string. This function works "step-by-step". At the first % sign, arg1 is inserted, at the second % sign, arg2 is inserted, etc.
• Eample
• <?php
  $fName = "Suneel";
  $number = 20;
  printf(""Hi %s, your number %u",$fName,$number);
  ?>
• Output:
• "Hi Suneel, your number 123
• sprintf()
• The sprintf() function writes a formatted string to a variable.

Syntax

• sprintf(format,arg1,arg2,arg++)
• The arg1, arg2, ++ parameters will be inserted at percent (%) signs in the main string. This function works "step-by-step". At the first % sign, arg1 is inserted, at the second % sign, arg2 is inserted, etc.
• Note:
• If there are more % signs than arguments, you must use placeholders. A placeholder is inserted after the % sign, and consists of the argument- number and "\$".
• Example 1
• <?php
  $fName = "Suneel";
  $number = 20;
  $txt = sprintf("Hi %s, your number %u",$fName,$number);
  echo $txt;
  ?>
• Output
• "Hi Suneel, your number 123