Data Processing Functions in PHP
PHP offers a rich set of functions to efficiently process and manipulate various types of data. This article introduces commonly used PHP data processing functions and demonstrates their practical usage with examples.
Array Functions
- array_merge(): Merge multiple arrays
- array_intersect(): Return the intersection of two arrays
- array_push(): Add elements to the end of an array
- array_shift(): Remove and return the first element of an array
String Functions
- strlen(): Get the length of a string
- str_replace(): Replace substrings within a string
- trim(): Remove whitespace from the beginning and end of a string
- explode(): Split a string by a delimiter
Type Conversion Functions
- intval(): Convert a variable to an integer
- floatval(): Convert a variable to a float
- strval(): Convert a variable to a string
- boolval(): Convert a variable to a boolean
Date and Time Functions
- time(): Get the current timestamp
- date(): Format a timestamp as a string
- strtotime(): Convert a parseable string into a timestamp
- gmdate(): Format a timestamp according to Greenwich Mean Time
Practical Examples
Calculate the Sum of Array Elements
$numbers = [1, 2, 3, 4, 5];
$total = array_sum($numbers);
echo $total; // Output: 15
Convert a String to Uppercase
$string = "hello world";
$uppercase = strtoupper($string);
echo $uppercase; // Output: HELLO WORLD
Convert a Timestamp to a Date
$timestamp = 1647620465;
$date = date("Y-m-d H:i:s", $timestamp);
echo $date; // Output: 2022-03-22 11:01:05
The above content introduces commonly used PHP data processing functions, including arrays, strings, type conversion, and date/time operations, along with practical examples to help developers quickly master PHP data processing techniques.