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Output • Any output from a PHP script becomes part of the document the PHP processor is building • An output from a PHP script is in the form of XHTML that is sent to the browser • XHTML is sent to the browser through standard output • There are three ways to produce output : • echo • print • printf 26
Output • echo function • If parentheses are included, only a single string parameter is acceptable • Otherwise, any number of parameters are acceptable (Ex) echo "whatever", "it may "; echo ("first ") ; • returns no value • echo and print take a string, but coerce other values to strings (Ex) echo 47 or print(47) will produce 47 27
Page 1 and 2: Lecture 6. PHP: Part 1 1
Page 3 and 4: Overview of PHP • PHP is a server
Page 5 and 6: Operation Overview Web browser Clie
Page 7 and 8: General Syntactic Characteristics
Page 9 and 10: General Syntactic Characteristics
Page 11 and 12: PHP TYPES • Four scalar types •
Page 13 and 14: Variables • If you prefer to be i
Page 15 and 16: Example • Integer $var = 1234; $v
Page 17 and 18: Special character Special char. \n
Page 19 and 20: Arithmetic Operators and Expression
Page 21 and 22: String Operations and Functions •
Page 23 and 24: Example $str = “Apples are good
Page 25: Scalar Type Conversions • Explici
Page 29 and 30: Example today.php Welcom
Page 31 and 32: Control Statements • Selection st
Page 33 and 34: Example if ($day ==== “Saturday
Page 35 and 36: HTML/PHP document • HTML can be i
Page 38 and 39: Result Powers table Number Square R
Page 40: PHP in HTML • Using variable

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