Advanced PHP Strings: Text analysis, generation, and parsing via. Laravel
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Advanced PHP Strings: Text analysis, generation, and parsing via. Laravel
About the Book
Working with multibyte strings, Unicode, and UTF-8 can feel intimidating when writing PHP. Advanced PHP Strings: Text analysis, generation, and parsing via. Laravel offers a guided experience navigating the different techniques to properly work with and manage multibyte strings. The book also offers extensive discussions around the Laravel string helper methods to provide a familiar reference point while navigating the intricacies of string and text manipulation.
Through hundreds of hand-crafted examples and in-depth discussions, you will learn how to:
- Read and write multibyte strings using PHP
- Safely loop through the characters of a multibyte string
- Work with over sixty Laravel string helper methods and fluent strings
- Manage documents with a variety of different line-ending styles
- Convert string positions to line and column numbers (and back)
- And so much more
About the Author
Table of Contents
- PHP Version
- Laravel Version
- Symbols Used In This Book
-
1 What are Strings
- 1.1 A Brief History of Character Encodings
- 1.2 Unicode and UTF-8
- 1.3 Implementing Uppercase and Lowercase Functions
- 1.4 Iterating Multibyte Strings
- 1.5 Accessing Individual Characters in a UTF-8 String
- 1.6 Managing Character Encodings
- 1.7 Types of PHP Strings
- 1.8 Backticks and Template Strings
- 1.9 The Laravel String Helpers
-
2 Fluent Strings
- 2.1 Converting Fluent String Objects to Strings
- 2.2 Conditional String Logic
-
3 The Formatting Helper Methods
- 3.1 Formatting Strings with camelCasing
- 3.2 Formatting Headlines
- 3.3 Formatting Strings with "kebab-casing"
- 3.4 Lowercasing the First Character of a String
- 3.5 Creating Lowercase Variants of a String
- 3.6 Reversing the Characters of a String
- 3.7 Creating a URL from a Title
- 3.8 Formatting Strings with snake_casing
- 3.9 Removing Extra Whitespace from a String
- 3.10 Formatting Strings with StudlyCasing
- 3.11 Formatting Strings with Title Casing
- 3.12 Uppercasing the First Character of a String
- 3.13 Generating Upper Cased Variants of Strings
- 3.14 Counting the Number of Words in a String
-
4 The Logical Helper Methods
- 4.1 Checking If a String Contains Another String
- 4.2 Checking If a String Contains Multiple Substrings
- 4.3 Checking If a String Contains Another String
- 4.4 Checking If a String Starts with Another String
- 4.5 Checking If a String Contains Only ASCII Characters
-
5 The Construction Helper Methods
-
5.1
Transliterating Characters to ASCII
- Language Codes
- 5.2 Generating Excerpts of Text
- 5.3 Ensuring a String Always Ends with a Given String
- 5.4 Calculating String Length
- 5.5 Truncating Strings
-
5.6
Obscuring Parts of a String
- You Probably Shouldn't Store Credit Card Numbers
- 5.7 Generating Pseudo-Random Strings
- 5.8 Removing Substrings or Characters from Strings
- 5.9 Repeating Strings and Characters
- 5.10 Replacing Substrings
- 5.11 Sequentially Replacing Substrings in a String
- 5.12 Replacing the First Occurrence of a Substring or Character
- 5.13 Replacing the Last Occurrence of a Substring or Character
- 5.14 Ensuring Strings Always Begin with a Specific Prefix
- 5.15 Replacing a Key/Value Pair of Strings within a String
- 5.16 Splitting Strings on Uppercase Characters
-
5.1
Transliterating Characters to ASCII
-
6 The Extraction Helper Methods
- 6.1 Returning Part of a String after Another String or Character
- 6.2 Returning a Substring after the Last Occurrence of a String or Character
- 6.3 Returning Part of a String before Another String or Character
- 6.4 Retrieving All Content before the Last Occurrence of a Substring or Character
- 6.5 Retrieving Content between Two Search Strings
- 6.6 Retrieving the Smallest Amount of Content between Two Search Strings
- 6.7 Limiting the Number of Words in a String
- 6.8 Getting Portions of a String
- 6.9 Counting Occurrences of a Search String
- 6.10 Replacing Strings within a Portion of an Existing String
-
7 Padding Strings
- 7.1 Padding the Beginning of Strings
- 7.2 Padding the End of Strings
- 7.3 Padding Both Sides of a String
-
8 String Translations; Singular and Plural Word Forms
- 8.1 Working with Variable Replacements
- 8.2 Managing Ranges of Items
- 8.3 Singular and Plural Word Forms
- 9 Extending Strings with Macros and Mixins
-
10 Lines and Words
- 10.1 Positions, Lines, and Columns
- 10.2 Splitting Strings into Words
- 10.3 Counting Word Occurrences
- 10.4 Finding Frequent and Repeated Words
- 10.5 Stop Words
- 10.6 Constructing Initialisms and Acronyms
- 10.7 Calculating Estimated Reading Time
-
11 More Lines and Words
- 11.1 Locating Words at Arbitrary Positions
- 11.2 Locating Neighboring Words and Characters
- 11.3 Retrieving Adjacent Lines
- 11.4 Managing Text Indentation
- 11.5 Implementing an IndentationManager Class
-
12 Applied Techniques: Writing a Gherkin Parser
- 12.1 Modeling Gherkin
- 12.2 A Gherkin Lexer
-
12.3
Implementing Our Gherkin Parser
- Parsing Gherkin Comments
- Parsing Names
- Parsing Step Text
- Parsing Free-Form Gherkin Descriptions
- Parsing Scenario Tags
- Parsing Step Parameters
- Parsing Doc Strings
- Parsing Gherkin Data Tables
- Parsing Scenario Examples
- Parsing Steps
- Parsing a Single Scenario and Background
- Parsing Scenario Outlines and Templates
- Parsing a Single Rule and Multiple Rules
- Parsing Features
- 12.4 Adding Localization Support to the Gherkin Parser
- 12.5 Other Applications of Indentation-Based Parsers
-
13 Markov Chains and Text Generation
- 13.1 Writing a Markov Text Generator
- 13.2 Weighted Randomized Selection
- 13.3 Improving our Text Generator
-
14 Fixed Width Data Parsing
- 14.1 Managing Data Conversions
- 14.2 Updating an Individual Record's Values
- 14.3 Techniques for Managing Text Truncation
-
15 Splitting Strings
- 15.1 Basic String Splitting
- 15.2 Splitting Strings Using Regular Expressions
- 15.3 Extracting YAML Frontmatter from Documents
- 15.4 Parsing Single-File Components
- 15.5 Splitting Input Containing Substrings with the Delimiter
- 15.6 Implementing a String Cursor System
- 15.7 Implementing the StringsCursor
- 15.8 Implementing the ClosureStringCursor
- 15.9 A Simple PHP Tokenizer
- 15.10 Working With SQL-Style Strings
- 15.11 Splitting Strings Containing Paired Brackets
-
16 Applied Techniques: A Blade Directive Validator
- 16.1 Scaffolding our Parser Implementation
- 16.2 Parsing Blade Directives
- 16.3 Parsing Directive Parameters
- 16.4 Validating Blade Directives
- 16.5 Ensuring Consistent Directive Casing
- 16.6 Enforcing Spacing After Directive Names
-
17 Working with HTML
- 17.1 Reversing Double Encoded HTML Entities
- 17.2 Working with Embedded Languages
- 17.3 Parsing Fragmented HTML Documents
- 17.4 Parsing HTML Attributes and Parameters
- 17.5 Analyzing Fragmented HTML Documents
-
18 Regular Expressions
-
18.1
Regular Expression Syntax Primer
- Meta-Characters
- Anchors
- Escape Sequences
- Character Classes
- Sub-Patterns, Capture Groups, and Non-Capturing Groups
- Repeating Characters and Patterns
- Ensuring Matches Do Not Start or End with a Specific Pattern
-
18.1
Regular Expression Syntax Primer
- Appendix A: UTF-8 String Iterator Implementation
- Appendix B: CharacterPositionLocator Implementation
- Appendix C: IndentationManager Implementation
- Appendix D: Gherkin Parser Implementation
- Appendix E: Markov Chain Implementation
- Appendix F: Single-File Component Parser Implementation
- Appendix G: String Cursor Implementation
- Appendix H: String Cursors
- Appendix I: Blade Directive Validator Implementation
- Appendix J: HTML Fragments Parser and Analyzer Implementation
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