Variable manipulation

Variable Manipulation
Variable manipulation in PHP involves performing various operations on variables to modify their values or content. Here are some common operations for variable manipulation in PHP:
1.Assignment: Assigning a value to a variable.
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$x = 10; $name = “John”;
2.Concatenation: Combining strings together.
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$first_name = “John”; $last_name = “Doe”; $full_name = $first_name . ” ” . $last_name;
3.Arithmetic Operations: Performing mathematical calculations with variables.
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$num1 = 10; $num2 = 5; $sum = $num1 + $num2; $difference = $num1 – $num2; $product = $num1 * $num2; $quotient = $num1 / $num2;
4.Increment and Decrement: Increasing or decreasing the value of a numeric variable.
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$count = 0; $count++; // Increment by 1 $count–; // Decrement by 1
5.String Manipulation: Manipulating strings using various functions.
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$text = “Hello, World!”; $length = strlen($text); // Get string length $uppercase = strtoupper($text); // Convert to uppercase $substring = substr($text, 0, 5); // Get a substring
6.Array Manipulation: Manipulating arrays, including adding, removing, and modifying elements.
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$fruits = [“apple”, “banana”, “cherry”]; array_push($fruits, “orange”); // Add an element to the end array_pop($fruits); // Remove the last element $fruits[1] = “pear”; // Modify an element
7.Type Conversion: Converting variables from one data type to another.
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$str_num = “42”; $int_num = (int)$str_num; // Convert string to integer
8.Variable Interpolation: Embedding variables within strings.
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$name = “Alice”; $greeting = “Hello, $name!”;
9.Variable Variables: Creating dynamic variable names based on the value of other variables.
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$var_name = “count”; $$var_name = 5; // Creates a variable $count with a value of 5
These are just some examples of variable manipulation in PHP. Depending on your specific use case, you may need to perform more complex operations and use various PHP functions and language constructs to manipulate variables effectively.