As an exercise, I try to follow these instructions on Using Perl Code from PHP (devzone.zend.com).

The environment is as follows:

$ perl -v | grep built
This is perl, v5.8.5 built for i386-linux-thread-multi
$ php -v | grep built
PHP 5.1.6 (cli) (built: Jun 17 2007 11:44:56)
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I downloaded this package and compiled as follows:

export PHP_PREFIX="/usr"
export PERL_PREFIX="/usr"
$PHP_PREFIX/bin/phpize
./configure --with-perl=$PERL_PREFIX --with-php-config=$PHP_PREFIX/bin
+/php-config
make
sudo make install
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Then I did a added extension=perl.so to /etc/php.ini:

$ grep -i extension /etc/php.ini | grep -v '^;'
extension_dir = "/usr/lib/php/modules"
extension=perl.so
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The shared perl library seems to be in place:

$ ll /usr/lib/php/modules/ | grep perl
-rwxr-xr-x  1 root root 150234 May  6 08:56 perl.so
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But when I try to run this simple sample, I get the error below:

$ cat perl.php
<?php
$perl = Perl::getInstance();
?>
$ php perl.php
PHP Fatal error:  Call to undefined method Perl::getinstance() in 
perl.php on line 2
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Has anyone succeeded interfacing perl from php using the above approach?

(Note that I also tried PHP::Interpreter without success. make test reports PHP/Interpreter/Interpreter.so: undefined symbol: _zval_ptr_dtor).

Update (RESOLVED): I made a mistake when copying sample code, as kindly noted by moritz:

$ cat call.perl.from.php
<?php
#$perl = Perl::getInstance();
$perl = new Perl();
$perl->eval("
print \"Executing Perl code in PHP\n\"
");
?>
$ php call.perl.from.php
Executing Perl code in PHP
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