CONSTANT(3) 1 CONSTANT(3)constant - Returns the value of a constantSYNOPSIS
mixed constant (string $name)
DESCRIPTION
Return the value of the constant indicated by $name.
constant(3) is useful if you need to retrieve the value of a constant, but do not know its name. I.e. it is stored in a variable or
returned by a function.
This function works also with class constants.
PARAMETERS
o $name
- The constant name.
RETURN VALUES
Returns the value of the constant, or NULL if the constant is not defined.
ERRORS /EXCEPTIONS
An E_WARNING level error is generated if the constant is not defined.
EXAMPLES
Example #1
constant(3) example
<?php
define("MAXSIZE", 100);
echo MAXSIZE;
echo constant("MAXSIZE"); // same thing as the previous line
interface bar {
const test = 'foobar!';
}
class foo {
const test = 'foobar!';
}
$const = 'test';
var_dump(constant('bar::'. $const)); // string(7) "foobar!"
var_dump(constant('foo::'. $const)); // string(7) "foobar!"
?>
SEE ALSO define(3), defined(3), The section on Constants.
PHP Documentation Group CONSTANT(3)
Check Out this Related Man Page
APC_LOAD_CONSTANTS(3) 1 APC_LOAD_CONSTANTS(3)apc_load_constants - Loads a set of constants from the cacheSYNOPSIS
bool apc_load_constants (string $key, [bool $case_sensitive = true])
DESCRIPTION
Loads a set of constants from the cache.
PARAMETERS
o $key
- The name of the constant set (that was stored with apc_define_constants(3)) to be retrieved.
o $case_sensitive
- The default behaviour for constants is to be declared case-sensitive; i.e. CONSTANT and Constant represent different values. If
this parameter evaluates to FALSE the constants will be declared as case-insensitive symbols.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
apc_load_constants(3) example
<?php
$constants = array(
'ONE' => 1,
'TWO' => 2,
'THREE' => 3,
);
apc_define_constants('numbers', $constants);
apc_load_constants('numbers');
echo ONE, TWO, THREE;
?>
The above example will output:
123
SEE ALSO apc_define_constants(3), define(3), constant(3), Or the PHP constants reference.
PHP Documentation Group APC_LOAD_CONSTANTS(3)
Friends,
I did following exercise
$ echo '' > test
$ od -b test
$ echo "">test
$ od -b test
$echo > test
$od -b test
Every time I got the following output
0000000 012
0000001
But 012 is octal value for new line character .
Even though there is no apperent new line character... (6 Replies)
I have two Directories, foo and foobar.
I want to combine the contents of foo into foobar.
There is probably a simple command for this, but I have yet to find it.
Thanks in advance,
Robert (2 Replies)
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In a declaration, I have:
const char comment_begin = "<!--";
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When I compile, I get the warnings:
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Hi,
I have a file from which i need to extract data between two constant strings.
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Line 3
Line 4 SUN> generate
Line 5 tabint>ERROR: (Variable data)
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hello,
i wil make the next mission:
give how many chambers in a constant number. use an array which chamber is free and count how many chamber there are free. make also something to test
I don't now how to start. I need an little example so i can make the mission
thank you (10 Replies)
I have a program............
#include<stdio.h>
#include<unistd.h>
main()
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if(fork == 0)
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}
}
This program works with out any error. here fork is not a system call. It just act as a variable.But how it works without declaring it? What data type it... (19 Replies)
Hello every body,
I need to make a constant variable to the root such as #PS1="I am Amer" and so on.
I know if i am a user,I can make it fixed from #vi .profile
HOW to make it fixed for the root?
Thanks in advance
BR
Ahmed Amer
Cairo,Egypt (7 Replies)
Hi all,
I have a variable test has the following value assigned.. could you please help on doing cd or ls to the value in the varible ...
$echo $test
/bdm/sdd/compounds/AD4833XT/requests/clin/Watson_20090420/docs/MHRA\ Comments\ \&\ Responses
$cd $test
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$cd... (3 Replies)
Hi!!
I have to download one file from FTP on a daily basis but the file name not constant.
Filename “BRAA.DAILY1.20120326.3456”
BRAA.DAILY1. - constant
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Few sample file names -
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I have a file containing data lines:
1|14|CONSTANT||11111111||00887722||30/04/2012|E|O|X||||20120528093654-30.04.2012|STA11ACT|ddts555S||||00001|rrttbbggcc|
1|15|CONSTANT||22222222||00887722||30/04/2012|E|O|X||||20120528093654-30.04.2012|rrtha772|llkis000||||00001|AAEtbbggcc|
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Hi,
I'm beginner in UNIX
I would like to split file in separate files depending on Pattern.
Input file looks like:-A
B
C
brfbeg
A
B
C
brfbeg
A
B
C
brfbeg
.
.
n so on (7 Replies)