Don't try to parse strings that don't contain blocks #3903
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pento
added
[Type] Performance
mtias
reviewed
Dec 11, 2017
lib/blocks.php
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| * If there are no blocks in the content, return a single block, rather | ||
| * than wasting time trying to parse the string. | ||
| */ | ||
| if ( ! preg_match( '/<!--\s*(wp:|more|noteaser)/', $content ) ) { |
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Can we use gutenberg_content_has_blocks() here?
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This was referenced Jan 30, 2024
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Description
As reported in #3799, parsing long strings that don't contain blocks cause significantly increased memory usage.
As ~100% of posts published prior to the release of WordPresss 5.0 fit this description, it's worth adding a special case to bail early, before even trying to parse the unparseable.
How Has This Been Tested?
Creating a post in the classic editor with this sample data, viewing the post, and observing memory usage under different conditions:
With Gutenberg disabled: 4.5MB, ~0.1s
With Gutenberg
masterenabled: 46.1MB, ~0.3sWith this PR enabled: 4.6MB, ~0.1s
Checklist: