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When the PHx replace Modifier Does Not Work
If <code>replace</code> in PHx does nothing, check the input value and parsing chain before assuming the modifier itself is broken.
The donor issue was simple on the surface: a PHx modifier that should replace part of a placeholder value did nothing at all. In practice, this kind of failure often comes from the value not being present in the form you expect at parse time.
Example
[+image-post:replace=`medium,mini`+]Debugging Checklist
- Confirm the placeholder actually contains the expected string before modifiers are applied.
- Check whether the placeholder is cached or generated by a later snippet call.
- Verify the PHx version bundled with the project or custom build.
- Test the same replacement on a literal value to separate parser issues from data issues.
On older custom builds, modifier behavior can differ slightly from what older articles describe. A quick controlled test with a known string is usually faster than patching template code blindly.
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