"All custom functions should start with xxx_ so that the developer knows a native PHP function is not being called.*
where xxx == your initials, or the project's initials, or ..."
An example custom function style:
function pwb_my_function($parameter1, $parameter2)
{
global $an_outside_variable;
....
...
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PHP Intro
Writing your own functions
Syntax Check a PHP Pgm
if you have error_reporting turned on:
@ini_set('display_errors', '1');
error_reporting(E_ALL); # (E_ALL ^ E_NOTICE) or everything: (E_ALL)
and you still get nothing but a blank page ... then, by all means, your next step might be to take the syntax check option built into PHP!
From a linux/unix command line (terminal session), run...
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PHP Intro
PHP is becoming the most widely-used general-purpose scripting language*, especially suited for Web development. It is, in fact, the programming component of the LAMP environment: Linux, Apache, MySql, Php.
PHP is surprisingly more popular than Microsoft's own ASP web scripting language! PHP runs lot faster than ASP...
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php, Arrays
Array keys start from 0, not 1.
In an associative array a key is associated with a value.
An array in PHP is actually an ordered map. (each key is mapped to a value).
array values can be other arrays, trees and multidimensional arrays are also possible.
A value can be any PHP type.
A key may be...
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php Number Formatting
the number_format() function can be used within an echo statement
ex:
number_format($ttl,2)
and includes commas
$number=2512589.66785;
echo "Number = $number ";
echo " The value after formating = ".number_format($number);
// The above line will display 2,512,590...
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php basic String functions
strcmp, substring, strtoupper, strtolower, str_replace, addslashes, trim, strstr, strpos, str_repeat, strrev, explode, implode, chunk_split, . . .
If you need to compare two strings, the strcmp() function performs a case-sensitive binary comparison of two strings, returning a negative value if the first is "less" than the second, a positive value if it's...
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