PHP Fatal error: Call to undefined function bcmul ()

When a server that handles network payment is migrated, it cannot be paid.

1. PHP version 5.3.3
2. The system is Red Hat 4.1.2-54
View the apache error log and find that an error is returned when the function bcmul () in the encrypted file:

PHP Fatal error: Call to undefined function bcmul () in/php_rsa.php on line xxx
This function is an extension of PHP mathematics. Use bcscale () to set the global default decimal places. The usage is as follows:

<? Php
Echo bcmul ('1. 34747474747 ', '35', 3); // 47.161
Echo bcmul ('2', '4'); // 8
?>

Solution:

Run the following command:

Yum install php-bcmath

The installation is complete.

If the following occurs:

Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirrors.yun-idc.com * extras: mirrors.yun-idc.com * rpmforge: ftp.riken.jp * updates: mirrors.yun-idc.com Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package php-bcmath.x86_64. 1.6-40. el5_9 set to be updated --> Processing Dependency: php-common = 5.1.6-40. el5_9 for package: php-bcmath --> Running transaction check ---> Package php-common.x86_64. 1.6-40. el5_9 set to be updated --> Processing Conflict: php53-common conflicts php-common --> Finished Dependency Resolution php53-common-5.3.3-13.el5_9.1.x86_64 from installed has depsolving problems --> php53-common conflicts with php-common Error: php53-common conflicts with php-common You cocould try using -- skip-broken to work around the problem You cocould try running: package-cleanup -- problems package-cleanup -- dupes rpm-Va -- nofiles -- nodigest
You just need to use yum update and then yum install php53-bcmath.

Options of this function in php. ini:

[Bcmath]; Number of decimal digits for all bcmath functions ..; http://www.php.net/manual/en/bc.configuration.php#ini.bcmath.scale bcmath. scale = 0
BC math library configuration options