Home Backend Development PHP Tutorial PHP Fatal error: Call to undefined function pcntl_fork()

PHP Fatal error: Call to undefined function pcntl_fork()

Jun 23, 2016 pm 02:29 PM

问题描述:

 [root@localhost www]# /usr/local/php/bin/php index.php 

PHP Fatal error:  Call to undefined function pcntl_fork() in /home/www/theard/threadProcessManager.php on line 69

解决办法:


1、从新编译php

./configure        --enable-pcntl     ``````````

2、不重新安装也可以,直接进你安装php时的源码目录ext/pcntl目录。

运行

phpize

[root@localhost pcntl]# ./configure --with-php-config=/usr/local/php/bin/php-config && make && make install    

把生成的文件放到默认的目录里:

[root@localhost pcntl]# cp /usr/local/php/lib/php/extensions/no-debug-non-zts-20090626/pcntl.so /usr/lib/php/modules/

然后在php.ini里加上这个extension
extension=pcntl.so
如果不加直接在你的程序里加载它(用dl()函数,该函数将被取消)也可以,特别对于 php 除了cmdline还要和apache做web工作的时候,因为web服务的时候加载pnctl模块爱出问题。

测试办法


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";
?>

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