how to get occurrences of specific column with condition in csv file in php

Got it You want to count occurrences of values in a specific column, but only when a condition on another column is met. Example CSV (data.csv): Task Count how many times each city appears, but only where status = ‘active’. PHP Code: Output: Explanation:

You can easily get the occurrences (frequency count) of values from a specific column in a CSV file using PHP’s built-in functions. Here’s a step-by-step example: Example: Count occurrences of values in a specific column of CSV Suppose you have a CSV file like this (data.csv): And you want to count how many times each […]

Here’s how you can declare an array in plain PHP, shuffle it, and traverse it: Explanation: If you wanted the shuffled result without modifying the original array, you could use:

For reading more than 15 lakh (1.5 million) records efficiently in PHP, you need to optimize memory usage and speed. Here’s a comprehensive recommendation: Recommended Approach: Use JSON or CSV with Streaming If you’re dealing with data files (like .json, .csv, or .txt), use a streaming parser instead of loading the entire file into memory. […]

Best Choice: CSV (for large flat data) Reason: Example: Efficient CSV Reading in PHP (Memory-Friendly) $handle = fopen(“bigdata.csv”, “r”);if ($handle !== FALSE) { while (($row = fgetcsv($handle, 0, “,”)) !== FALSE) { // Process each row (e.g., insert into DB, print, etc.) // Example: // print_r($row); } fclose($handle);} $count = 0;while (($row = fgetcsv($handle, 0, […]

1. Basic Difference Feature CSV JSON Format Comma-separated values (plain text) JavaScript Object Notation (structured) Structure Tabular (rows and columns) Hierarchical (key-value, nested) Human readable Yes Yes Size Smaller (usually) Slightly larger due to syntax Use case Spreadsheet-like data API responses, configs, complex data 2. How to Read CSV in PHP $csvFile = fopen(“data.csv”, “r”);while […]

When reading data in PHP, both CSV (Comma-Separated Values) and JSON (JavaScript Object Notation) offer distinct advantages and disadvantages depending on the data’s structure and the application’s requirements. CSV Reading in PHP: JSON Reading in PHP: Considerations for Choosing Between CSV and JSON:

Here’s a comparison with examples: 1. Syntax & Ease of Use JSON (Easier & Lighter) phpCopyEdit$json = ‘{“name”:”Aditya”,”email”:”adityaypi@yahoo.com”}’; $data = json_decode($json, true); // true for associative array echo $data[‘name’]; // Output: Aditya XML (More Verbose & Complex) $xml = ‘<user><name>Aditya</name><email>adityaypi@yahoo.com</email></user>’;$data = simplexml_load_string($xml);echo $data->name; // Output: Aditya 2. Performance Metric JSON XML Speed ✅ Faster ❌ […]

When comparing XML and JSON reading in PHP, several factors differentiate their usage and performance: 1. Ease of Use and Readability: 2. Performance and Memory Usage: 3. Data Structure and Complexity: 4. Tooling and Ecosystem: 5. Security: In summary: