W1 PHP Tutorial

8/13/2019 W1 PHP Tutorial

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PHP Tutorial

Chu-Cheng Hsieh

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Demo

Project 1A

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Scripting block

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First example

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Variable in PHP

start with a $ sign symbol Loosely Typed Language

does not need to be declared

start with a letter or an underscore "_

alpha-numeric characters and underscores (a-Z, 0-9, and _ ) not contain spaces

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String

$txt="Hello World"; concatenation operator (.)

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Operators

Arithmetic +, -, *, /, %, ++, --

Assignment

=, +=, -=, *=, /=, .=, %=

Comparison ==, !=, >, =,


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Its time to introuce

Zend Studio http://www.zend.com/en/products/studio/

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A useful resource

http://us2.php.net/manual/en/

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ifelse

if (condition) code to be executed if condition is true;

elseif (condition)

code to be executed if condition is true;

else code to be executed if condition is false;

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example of if~else

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switch

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Arrays

$names = array("Peter","Quagmire","Joe"); $names[0] = "Peter";

$names[1] = "Quagmire";

$names[2] = "Joe";

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Associative Arrays

$ages = array("Peter"=>32, "Quagmire"=>30, "Joe"=>34); $ages['Peter'] = "32";

$ages['Quagmire'] = "30";$ages['Joe'] = "34";

Example

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Looping ~ for

for (init; cond; incr)

{ code to be executed; } Example

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functions


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Hint for project 1A

eval

Example:

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Hint for Project 1A preg_match

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matches

If matches is provided, then it is filled with the results ofsearch.

$matches[0] will contain the text that matched the full pattern,

$matches[1] will have the text that matched the first captured

parenthesized subpattern,

and so on.

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W1 PHP Tutorial