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Zend Framework: Zend_Filter_StringTruncate Component Proposal

Table of Contents

1. Overview

Zend_Filter_StringTruncate is a filter which truncates strings, regardless of their content.

2. References

• PHP's substr
• Based on the StringLength Proposal - see Zend comments

3. Component Requirements, Constraints, and Acceptance Criteria

• This component will truncate strings at a given length
• This component will also handle multibyte strings

4. Dependencies on Other Framework Components

• Zend_Filter_Interface
• Zend_View_Helper_Abstract

5. Theory of Operation

This filter truncates strings to a given length. It's the reverse filter for the StringPad Filter.
For simplicity this filter also adds a view helper which makes use of this filter.

6. Milestones / Tasks

• Milestone 1: [DONE] Proposal finished
• Milestone 2: Proposal accepted
• Milestone 3: Working implementation
• Milestone 4: Unit tests
• Milestone 5: Documentation
• Milestone 6: Moved to core

7. Class Index

• Zend_Filter_StringTruncate
• Zend_View_Helper_StringTruncate

8. Use Cases

Truncate a string at 6 chars

Truncate a string at 6 chars, using ending chars

Truncate a string at 6 chars, using ending chars and additionally get the truncated content

9. Class Skeletons