<?php
// php comments
/* More comments */
$var = "hello world"
print $var." from php";
echo "{$var}, like shell";
define("MY_PI", 3.14159);
print MY_PI;
if($x > $y){
$max = $x;
}else {
$max = $y;
}
$count = $result = 1;
while($count <= $N){
$result *= $count;
$count++;
}
for($i = 0; $i < 100; $i++)
{
$result += $i;
}
/* type converting */
string strval(mixed var);
integer intval(mixed var [, integer base]);
float floatval(mixed var);
boolean settype(mixed var, string type);
/* type checking */
boolean is_int(mixed var);
boolean is_float(mixed var);
boolean is_bool(mixed var);
boolean is_string(mixed var);
boolean is_array(mixed var);
boolean is_object(mixed var);
/* debug */
string gettype(mixed var);
print_r(mixed expr);
var_dump(mixed expr [, mixed expr]);
/* test setting */
boolean isset(mixed var);
boolean empty(mixed var);
/* user defined function */
function func($arg1 = 0, &$arg2)
{
global $temp;
static $count = 0;
}
func($a, $b);
include "functions.inc";
require "/DB.php"; #relative to include_path defined in php.ini
$numbers = array(5,6,7,8,9);
$shopping = array();
$shopping[] = "milk";
$shopping[] = "coffee";
$shopping[] = "sugar";
$mapping = array("first" => 1, "second" => 2, "third" => 3);
$mapping["first"] = 0;
unset($mapping); // destory a whole array
$planets = array(
"Mecury" => array("dist" => 0.39, "dia" => 0.38),
"Venus" => array("dist" => 0.72, "dia" => 0.95),
"Earth" => array("dist" => 1.00, "dia" => 1.00, "moon" => array("Moon")),
"Mars" => array("dist" => 0.39, "dia" => 0.53, "moon" => array("Phobos", "Deimos")),
);
print $planets["Earth"]["moon"][0];
/* foreach with array */
foreach($mapping as $number)
{
}
foreach($planets as $name => $info)
{
}
// array functions
integer count(mixed var);
array array_count_values(array input); #count every value's frequence
array array_fill(integer start, integer count, mixed val);
array range(mixed low, mixed high [, integer step]);
array explode(string separator, string subject[, integer limit]); // break string into array at each occurence of the separator string
string implode(string glue, array pieces); // join each element in pieces, inserting glue between each piece
number max(array numbers);
number min(array numbers);
boolean in_array(mixed needle, array haystack [, boolean strict]);
mixed array_search(mixed needle, array haystack [, boolean strict]); // return the key of the matching value or false
boolean array_key_exists(mixed key, array source);
array array_keys(array input [, mixed search_value]); // return all keys or find keys for a particular value
array array_values(array input);
array array_unique(array values);
array array_merge(array array1, array array2 [, array ...]);
array array_reverse(array source [, bool preserve_keys]);
sort(array subject [, integer sort_flag]); // SORT_STRING, SORT_REGULAR
rsort(array subject [, integer sort_flag]); // descending order
asort(array subject [, integer sort_flag]); // sort associative array on its values
arsort(array subject [, integer sort_flag]);
usort(array subject, string compare_function); // user defined sort: integer compare_function(mixed a, mixed b);
uasort(array subject, string compare_function);
uksort(array subject, string compare_function); // based on key
/* string functions */
integer strlen(string subject);
// formatting string
string sprintf(string format [, mixed args]); // %b %c %d %u %o %xX %f %s
integer printf(string format [, mixed args]);
// string padding
string str_pad(string input, int length [, string padding [, int pad_type]]); // STR_PAD_LEFT, STR_PAD_BOTH
// change case
string strtolower(string subject);
string strtoupper(string subject);
string ucfirst(string subject);
string ucwords(string subject);
// trim whitespace
string ltrim(string subject [, string character_list]);
string rtrim(string subject [, string character_list]);
string trim(string subject [, string character_list]);
// compare string
integer strcmp(string str1, string str2);
integer strcmp(string str1, string str2, integer length);
// substring
string substr(string source, integer start [, integer length]);
integer strpos(string haystack, string needle [, integer offset]); // search occurs from offset
integer strrpos(string haystack, string needle); // return last occurence of the needle
string strstr(string haystack, string needle); // return the portion of haystack from the first occurence of needle to the end of haystack
string stristr(string haystack, string needle); // case insensitive
string substr_replace(string source, string replace, int start [, int length]);
mixed str_replace(mixed search, mixed replace, mixed subject);
// translate
string strtr(string subject, string from, string to);
string strtr(string subject, array map);
// regular expression functions
boolean ereg(string pattern, string subject [, array var]); // var is populated with the portions of subject that are matched by pattern
boolean eregi(string pattern, string subject [, array var]); // case-insensitive
string ereg_replace(string pattern, string replacement, string souce);
string eregi_replace(string pattern, string replacement, string souce);
array split(string pattern, string source [, int limit]);
array spliti(string pattern, string source [, int limit]);
// date and time
integer time(); // return timestamp since 1970
int mktime(int hour, int minute, int second, int month, int day, int year [, int is_dst]); // create timestamp for a date
integer strtotime(string time);
string microtime(); // begin with microsecond, followed by integer timestamp
string date(string format [, int timestamp]);
boolean checkdate(int month, int day, int year);
// int and float
mixed abs(mixed number);
float round(float val [, int precision]);
// number systems
string decbin(int number);
int bindec(string binarystring);
string dechex(int number);
int hexdec(string hecstring);
string decoct(int number);
int octdec(string octalstring);
// OOP
class CaseCounter extends UnitCounter
{
private $unitsPerCase;
var $caseCapacity = 1.0;
protected function addCase()
{
$this->add($this->unitsPerCase);
}
function __construct($unitWeight)
{
parent::__construct($unitWeight);
$this->unitsPerCase = $caseCapacity;
}
}
?>
