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Evert Pot:
Save memory by switching to generators
Aug 11, 2015 @ 09:45:51

Evert Pot has a post to his site showing you to conserve memory with generators in your PHP scripts. Generators are a language feature that allows you to generate/manipulate data like an iterator without needing to pre-generate the array beforehand.

Since the release of PHP 5.5, we now have access to generators. Generators are a pretty cool language feature, and can allow you to save quite a bit of memory if they are used in the right places. [...] It's not uncommon in complex applications for the result of a function like our [example] to be passed to multiple functions that mangle or modify the data further. Each of these functions tend to have a (foreach) loop and will grow in memory usage as the amount of data goes up.

He uses a common example of fetching a set of articles from a database to show how memory consumption could get huge when a large number of articles are involved. He rewrites the example using generators instead, making use of the yield functionality to only fetch one record at a time and map it to the object structure. He also includes a few things to watch out for when using generators including the different return value of the method (iterator, not an array). He also points out an issue where the array_* functions will no work on iterators so you'd need to convert it back to an array before use.

tagged: memory generator switch example records yield

Link: http://evertpot.com/switching-to-generators/

Job Posting:
Electronic Medical Records Seeks Experienced PHP / MySQL Programmer (Philadelphia, PA)
May 02, 2007 @ 09:13:00

Company Electronic Medical Records
Location Philadelphia, PA
Title Experienced PHP / MySQL Programmer
Summary

  • At least 5 years PHP experience
  • At least 5 years MySQL experience
  • At least 5 years Unix experience
  • At least 3 years HTML experience
  • At least 3 years Javascript / AJAX experience
  • Healthcare informatics (electronic medical record) experience would be helpful, particularly, previous experience with ICD10.
  • Programmer will be based in Philadelphia, with remote access to server in Botswana.
  • Programmer will need to travel to Botswana, 3 weeks every 3 months
This is a one year contract, renewable.

Please send detailed CV, including descriptions of previous projects worked on.

Compensation: $60,000 base + $20,000 performance bonus
Telecommuting is ok.
This is a contract job.
Principals only. Recruiters, please don't contact this job poster.

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tagged: job post medical records mysql programmer philadelphia pa job post medical records mysql programmer philadelphia pa

Link:

Job Posting:
Electronic Medical Records Seeks Experienced PHP / MySQL Programmer (Philadelphia, PA)
May 02, 2007 @ 09:13:00

Company Electronic Medical Records
Location Philadelphia, PA
Title Experienced PHP / MySQL Programmer
Summary

  • At least 5 years PHP experience
  • At least 5 years MySQL experience
  • At least 5 years Unix experience
  • At least 3 years HTML experience
  • At least 3 years Javascript / AJAX experience
  • Healthcare informatics (electronic medical record) experience would be helpful, particularly, previous experience with ICD10.
  • Programmer will be based in Philadelphia, with remote access to server in Botswana.
  • Programmer will need to travel to Botswana, 3 weeks every 3 months
This is a one year contract, renewable.

Please send detailed CV, including descriptions of previous projects worked on.

Compensation: $60,000 base + $20,000 performance bonus
Telecommuting is ok.
This is a contract job.
Principals only. Recruiters, please don't contact this job poster.

Link More Information
tagged: job post medical records mysql programmer philadelphia pa job post medical records mysql programmer philadelphia pa

Link: