How to Parse a Multi-Line Block of Text into an Associative Array in PHP

Learn how to effectively parse multi-line text data into structured associative arrays in PHP. Follow our step-by-step guide to handle database query results easily!
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Introduction

When dealing with data from databases, you might encounter scenarios where the data is retrieved as a single column of a multi-line block of text. This can make it challenging to structure that data efficiently for further processing in your PHP applications.

In this guide, we will explore how to effectively parse such a block of text to create an array of associative rows. By doing so, you can transform unstructured data into a format that is easy to work with and understand.

The Problem at Hand

Suppose you have the following multi-line block of text retrieved from a database query:

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Your objective is to:

Ignore the header line.

Remove any blank lines.

Extract specific values (Date and Fee) from each line.

Create an array of associative arrays that captures this data.

An example of the desired outcome would look like:

[[See Video to Reveal this Text or Code Snippet]]

The Solution

To accomplish this task, follow these steps:

Step 1: Split the Text into Lines

You can utilize the explode() function in PHP to divide the string into an array of individual lines by using the newline character as a delimiter.

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Step 2: Remove the Header Row

The first item in the $rows array is a header that you don't need. Use the array_shift() function to remove it.

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Step 3: Initialize an Empty Results Array

Prepare an empty array to hold the associative arrays that will be created.

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Step 4: Process Each Row

Iterate through the rows and perform the following actions:

Trim any whitespace.

Check if the row is not empty.

Use explode('=', $row) to split the row by the equals sign.

Map the values to variables, and create an associative array for each.

Here’s how this looks in code:

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Step 5: Output the Result as JSON

Finally, use json_encode() to convert your results array into a JSON string for easy readability and use.

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Output

When executing the above code, you will get the following formatted JSON output:

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Conclusion

Parsing a multi-line block of text into an associative array can seem daunting at first, but by following a structured approach, you can easily achieve your goal. By breaking down the process into clear steps, we have transformed complicated text data into a usable format for PHP applications.

Now you have the knowledge to handle similar tasks in your projects, making your data processing seamless and efficient!