pcntl fork

Problem: Fatal error: Call to undefined function: pcntl_fork() in ... although you have compiled PHP as an Apache module with --enable-pcntl

Solution: Run PHP as CGI module It will not run as an Apache module!

Compile PHP4 with 
        --without-ldap                                          \
        --without-apache                                        \
        --enable-pcntl                                          \
        --enable-sigchild                                       \
        --enable-inline-optimization                            \
        --enable-sockets                                        \
        --enable-track-vars                                     \
        --enable-shmop                                          \
        --enable-sysvsem                                        \
        --enable-sysvshm                                        \
        --with-mysql                                            \
Compile Apache 1.3.24 like this but WITHOUT activate-module 
                --server-uid=www                                \
                --with-port=8010                                \
                --server-uid=www                                \
                --enable-module=usertrack                       \
                --enable-module=unique_id                       \
                --enable-module=so                              \
...


               --activate-module=src/modules/php4/libphp4.a





http.conf:


    AddType application/x-httpd-php .php
    AddType application/x-httpd-php .php4
    AddType application/x-httpd-php .php3
    AddType application/x-httpd-php-source .sphp

    # change /www/php.420_cgi/bin/ to your bin path  (where the php interpreter is)	
    <Directory /www/php.420_cgi/bin/>
    Options ExecCGI SymLinksIfOwnerMatch
    AllowOverride None
    </Directory>

    # change /www/php.420_cgi/bin/ to your bin path  (where the php interpreter is)	
    ScriptAlias /php/ "/www/php.420_cgi/bin/"

    # do not change this!
    Action application/x-httpd-php "/php/php"




Do not forget to _restart_ your apache!




test_fork.php:




<?
echo "This is an echo before I called the fork command\n";

$pid = pcntl_fork();
if ($pid == -1) {
   die("could not fork");
} else if ($pid) {
   echo "I am the parent, pid = ". $pid ."\n";
} else {
   echo "I am the child, pid = ". $pid ."\n";
}
echo "This is an echo after I called the fork command\n";
?>



if you see somethink like this:


This is an echo before I called the fork command



then it is not working.




You need to see something like this:


This is an echo before I called the fork command
I am the child, pid = 0
This is an echo after I called the fork command


Content-type: text/html

This is an echo before I called the fork command
I am the parent, pid = 3607
This is an echo after I called the fork command





keywords: php php4 linux apache 1.3.24 cgi module pcntl_fork fork multitasking skript problem fatal error


Questions, remarks or comments:  Andreas Bohne