Pseudo_Block improves usability of eval(), create_function(). You do not have to escape double/single quotations, back slashes in your eval(), create_function().
Pseudo_Block provides 'pseudo code block' way which not supported in PHP syntax natularry.
PHP(Unit Tested) : PHP 4.4.7 and 5.2.4
Pseudo_Block is provieded as PEAR package. You can install it into your PEAR environment like below:
$ su (if you needed) # pear install \ http://xhwlay.sourceforge.net/Pseudo_Block/Pseudo_Block-0.1.1.tgz
Are you a normal user, not administrator of your sever ?
Don't worry. PEAR provides some means for normal users to setup PEAR environment in user's local/home environment.
Please refer PEAR Manual :
>>"Installation -> Getting Manager" (In English)
In Japanese, you can refer same manual here :
http://www.phppro.jp/phpmanual/pear/installation.getting.html
$ svn checkout \ https://xhwlay.svn.sourceforge.net/svnroot/xhwlay/Pseudo_BlockView only : http://xhwlay.svn.sourceforge.net/viewvc/xhwlay/
<?php
require_once('Pseudo/Eval.php');
$pe =& new Pseudo_Eval();
// start pseudo block
$pe->start();
?>
// Here is pseudo block code.
$a = "ABC.";
$b = 'xyz.';
return $a . $b . $c;
// $c is binded value from outside of this block.
<?php
// end pseudo block
$pe->end();
$val = 30;
// bind $val to '$c' to pseudo code block
// NOTE: you can't bind values by reference. (all value is passed by copy)
$pe->bind('c', $val);
// evaluate pseudo code block
$result = $pe->act();
echo $result . PHP_EOL;
// out : "ABC.xyz.30"
?>
<?php
require_once('Pseudo/Lambda.php');
// args is create_function()'s 1st args(function arguments)
$pl =& new Pseudo_Lambda('$a, $b');
// start pseudo block
$pl->start();
?>
// Here is pseudo block code.
static $c = 0;
$c++;
return $a + $b + $c + $d;
// $d is binded value from outside of this block.
<?php
// end pseudo block
$pl->end();
$val = 30;
// bind $val to '$d' to pseudo code block
// NOTE: you can't bind values by reference. (all value is passed by copy)
$pl->bind('d', $val);
// create anonymous function (lambda) from pseudo code block
$func = $pl->create();
echo $func(1, 2) . PHP_EOL; // out : 34 (1 + 2 + 1($c) + 30($d))
echo $func(3, 4) . PHP_EOL; // out : 39 (3 + 4 + 2($c) + 30($d))
?>
Pseudo_Block is super class of Pseudo_Eval and Psuedo_Lambda.
It provides pseudo block text handling method. You can use pseudo block as raw data section like perl and ruby.
<?php
require_once('Pseudo/Block.php');
$pb =& new Pseudo_Block();
// start pseudo block
$pb->start();
?>
Name|Age|Hobbies
Masahiko|26|Programming
Sakamoto|62|Cooking
FengJing|-|Walking
<?php
// end pseudo block
$pb->end();
// get pseudo block text
$text = $pb->getText();
$rows = array_map('trim', explode("\n", $text));
foreach($rows as $row) {
echo strtr($row, "|", ",") . PHP_EOL;
}
?>
<?php
require_once('Pseudo/Perl.php');
$pp =& new Pseudo_Perl();
$pp->setPerlBin('C:/Perl/bin/perl.exe -w');
$pp->start();
?>
while(<STDIN>) {
print STDOUT $_;
print STDERR "--", $_;
}
<?php
$pp->end();
// we can communicate with invoked process
// through stdin/out/err descriptor.
$pp->descriptors = array(
0 => array('pipe', 'r'),
1 => array('pipe', 'w'),
2 => array('pipe', 'w'),
);
$pp->popen();
// now we pass some string datas to perl.
fwrite($pp->pipes[0], "ABC");
fwrite($pp->pipes[0], "DEF");
fclose($pp->pipes[0]);
// now we retrieve some string datas from perl.
$output = fread($pp->pipes[1], 8192); // STDOUT
echo $output . PHP_EOL;
fclose($pp->pipes[1]);
$output = fread($pp->pipes[2], 8192); // STDERR
echo $output . PHP_EOL;
fclose($pp->pipes[2]);
$pp->pclose();
<?php
require_once('Pseudo/Perl.php');
$pp =& new Pseudo_Perl();
$pp->setPerlBin('C:/Perl/bin/perl.exe -w');
// bind value (a)
$pp->bind('foo', 123);
$pp->start();
?>
# We can retrieve bound values through CGI interface.
use strict;
use warnings;
use CGI;
our $q = new CGI();
print $q->param('foo'), "\n";
print $q->param('bar'), "\n";
<?php
$pp->end();
// bind value(b)
$pp->bind('bar', 'ABC DEF GHI');
$pp->descriptors = array(
1 => array('pipe', 'w'),
);
$pp->popen();
$output = fread($pp->pipes[1], 8192);
echo $output . PHP_EOL;
fclose($pp->pipes[1]);
$pp->pclose();
Hava a funny PHP programming !!