0 views collected around this technical thread.
This article explains PHP's str_replace function, detailing its syntax, how it searches and replaces substrings, and provides multiple examples—including simple replacement, replacing multiple characters with arrays, and deleting characters—demonstrating practical usage for efficient string manipulation.
This article explains the PHP array_filter() function, its signature and parameters, and demonstrates how to filter numeric arrays and associative arrays with custom callbacks through clear code examples and output results.
This article explains PHP's array_intersect() function, detailing its syntax, required and optional parameters, return value, and provides three practical code examples with outputs to illustrate how it extracts common elements from multiple arrays.
This article explains the PHP strlen() function, its syntax, and provides multiple code examples for obtaining string length, checking for empty strings, validating length limits, and handling multibyte characters, while noting the need for mb_strlen() for Unicode strings.
This article explains PHP's is_numeric() function, shows how it checks whether variables—including integers, floats, and numeric strings—are numeric, provides code examples for direct checks and form validation, and discusses special cases to watch out for.
This article explains the PHP file_put_contents() function, its syntax, parameters, return values, and provides practical code examples for writing strings, appending data, handling arrays, and using callbacks to efficiently manage file operations in backend development.
This article explains the PHP cURL extension’s curl_setopt() function, covering its syntax, parameter meanings, boolean return value, and provides a complete example that demonstrates sending a GET request, handling responses, and closing the cURL session.
This article explains how to use PHP's filemtime function to retrieve a file's last modification timestamp, demonstrates single‑file and multiple‑file examples, and shows how to format the timestamp with the date function for readable output.
This article explains the PHP ftell() function, its parameters and return values, and provides a complete example that reads the first ten bytes of a file, displays the content, obtains the file pointer offset, and highlights important considerations when working with byte‑based positions.
This article explains PHP's str_replace() function, detailing its syntax, parameters, return value, and provides three practical code examples—including single and multiple replacements and case‑insensitive replacement—while highlighting best practices for effective string manipulation.
This article explains the PHP str_replace function, its syntax, and demonstrates through three examples how to perform simple replacements, replace multiple substrings, and delete characters in strings, while also mentioning additional options and linking to further learning resources.
This article explains how PHP's tmpfile() function creates a unique temporary file that is automatically deleted when closed or when the script ends, and demonstrates its usage with example code for writing, reading, and cleaning up the file.
This article explains the PHP str_replace() function, covering its syntax, parameter details, return value, and provides three practical code examples for single, multiple, and case‑insensitive replacements, helping developers master string manipulation in PHP.
This article explains PHP's time() function, describing how it returns the current Unix timestamp, demonstrates basic usage, and provides multiple code examples for retrieving timestamps, comparing dates, and formatting the current date and time.
This article explains two efficient ways to swap keys and values of a PHP array—using the built‑in array_flip() function and a manual loop—compares their performance with a microtime benchmark, and provides complete code examples for each approach.
This article explains how the PHP curl library’s curl_multi_add_handle() function can combine multiple cURL handles into a single multi‑handle session, provides its syntax and parameters, and demonstrates its usage with a complete example that improves network request efficiency.
This article explains PHP's versatile date() function, detailing its syntax, required format parameter, optional timestamp argument, and demonstrates numerous usage examples—including retrieving current date, time, individual components, and formatting specific timestamps—highlighting its importance for backend web development.
This article explains how the PHP file_get_contents() function works, detailing its syntax, parameters, and examples for reading both local and remote files, while also highlighting its usefulness for further data processing.
This article explains the PHP file_exists() function, covering its syntax, return values, practical examples for checking local and remote files as well as directories, and important limitations to consider when using it in backend development.
This article explains PHP's array_column() function, available since version 5.5, showing its syntax, parameters, return values, and practical code examples for extracting specific keys from multidimensional arrays and optionally using an index key to create associative results.