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Editorial Team
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Asked: 2026-05-26T22:11:41+00:00

what is/are the benefit(s) of having multiple spl_autoload_register example: spl_autoload_register(‘autoload_systems’); spl_autoload_register(‘autoload_thirdparties’); spl_autoload_register(‘autoload_services’); vs: using

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what is/are the benefit(s) of having multiple spl_autoload_register

example:

spl_autoload_register('autoload_systems');
spl_autoload_register('autoload_thirdparties');
spl_autoload_register('autoload_services');

vs:

using one

spl_autoload_register('autoload'); or __autoload();

and then do the logic inside the function. 

eg:
$ftp = new systems_ftp();
$services = new services_cron_email();
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1 Answer

  1. Editorial Team

    If you have one __autoload() and you include a third party library which also had one, it would be clobbered.

    Registering multiple autoloads with spl_autoload_register() ensures you can have your code dropped in with existing code (think libraries, etc) without clobbering or shadowing of existing/future autoloads.

    In addition, the PHP manual states…

    spl_autoload_register() provides a more flexible alternative for
    autoloading classes. For this reason, using __autoload() is
    discouraged and may be deprecated or removed in the future.

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