✅ PHP Regular Expressions (Regex) Regular Expressions are patterns used to match, search, or replace text. PHP supports regex in two ways: preg_ functions → recommended (Perl-compatible) ereg_ functions → deprecated (not used today)...
✅ PHP Global Variables – Superglobals PHP Global Variables provides several built-in global arrays that are available everywhere in your script—inside and outside functions—without needing global keyword. These special variables are called Superglobals. 🌟...
✅ PHP Arrays An array in PHP is a special variable that can hold multiple values under a single name.Each value in an array is called an element, and each element has an index...
✅ PHP Functions In PHP Functions is a block of code that can be reused multiple times.Functions help make code modular, reusable, and easier to maintain. Why Use Functions? Reuse the same code without...
⭐ PHP Loops PHP Loops allow you to execute a block of code multiple times, until a condition is met. PHP supports 4 main types of loops: while loop do…while loop for loop foreach...
⭐ PHP switch Statement The PHP switch Statement is used when you need to compare the same variable with multiple possible values. It works like multiple if…elseif but is cleaner and easier to read. ✔️...
⭐ PHP if Statements In PHP if Statements is used to execute a block of code only if a condition is true. 1. Basic if Statement Syntax:
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if (condition) { // code to run if condition is true } |
Example:
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$age = 20; if ($age >= 18) { echo "You are an adult."; } |
2. if…else Statement Runs...
⭐ PHP Operators Operators are special symbols used to perform operations on variables and values. PHP has several types of operators: Arithmetic Operators Assignment Operators Comparison Operators Logical Operators Increment/Decrement Operators String Operators Array...
PHP Constants In PHP Constants is a name/identifier for a simple value that cannot be changed during the script execution. A constant does not use $ before its name. A constant’s value remains the...
PHP Math Functions PHP Math Functions to perform calculations like rounding, generating random numbers, finding maximum/minimum values, square roots, and more. 1. abs() – Absolute Value Returns the positive value of a number.
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echo abs(-10); // 10 echo abs(18.5); // 18.5 |
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