• PHP Functions
    The real power of PHP comes from its functions. PHP has more than 1000 built-in functions, and in addition you can create your own custom functions. PHP Built-in Functions PHP has over 1000 built-in functions that can be called directly, from within a script, to perform a specific task. Please check out our PHP reference for a complete overview of the PHP built-in functions. PHP...
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  • PHP Arrays
    An array stores multiple values in one single variable: ExampleGet your own PHP Server $cars = array("Volvo", "BMW", "Toyota"); Try it Yourself » What is an Array? An array is a special variable that can hold many values under a single name, and you can access the values by referring to an index number or name. PHP Array Types In PHP, there are three types of arrays:...
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  • PHP Indexed Arrays
    PHP Indexed Arrays In indexed arrays each item has an index number. By default, the first item has index 0, the second item has item 1, etc. ExampleGet your own PHP Server Create and display an indexed array: $cars = array("Volvo", "BMW", "Toyota"); var_dump($cars); Try it Yourself » Access Indexed Arrays To access an array item you can refer to the index number. Example...
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  • PHP Associative Arrays
    PHP Associative Arrays Associative arrays are arrays that use named keys that you assign to them. ExampleGet your own PHP Server $car = array("brand"=>"Ford", "model"=>"Mustang", "year"=>1964); var_dump($car); Try it Yourself » Access Associative Arrays To access an array item you can refer to the key name. Example Display the model of the car: $car =...
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  • PHP Create Arrays
    Create Array You can create arrays by using the array() function: ExampleGet your own PHP Server $cars = array("Volvo", "BMW", "Toyota"); Try it Yourself » You can also use a shorter syntax by using the [] brackets: Example $cars = ["Volvo", "BMW", "Toyota"]; Try it Yourself » Multiple Lines Line breaks are not important, so an array...
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  • PHP Access Arrays
    Access Array Item To access an array item, you can refer to the index number for indexed arrays, and the key name for associative arrays. ExampleGet your own PHP Server Access an item by referring to its index number: $cars = array("Volvo", "BMW", "Toyota"); echo $cars[2]; Try it Yourself » Note: The first item has index 0. To access items from an associative...
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  • PHP Update Array Items
    Update Array Item To update an existing array item, you can refer to the index number for indexed arrays, and the key name for associative arrays. ExampleGet your own PHP Server Change the second array item from "BMW" to "Ford": $cars = array("Volvo", "BMW", "Toyota"); $cars[1] = "Ford"; Try it Yourself » Note: The first item has index 0. To update items from...
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  • PHP Add Array Items
    Add Array Item To add items to an existing array, you can use the bracket [] syntax. ExampleGet your own PHP Server Add one more item to the fruits array: $fruits = array("Apple", "Banana", "Cherry"); $fruits[] = "Orange"; Try it Yourself » Associative Arrays To add items to an associative array, or key/value array, use brackets [] for the key,...
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  • PHP Delete Array Items
    Remove Array Item To remove an existing item from an array, you can use the array_splice() function. With the array_splice() function you specify the index (where to start) and how many items you want to delete. ExampleGet your own PHP Server Remove the second item: $cars = array("Volvo", "BMW", "Toyota"); array_splice($cars, 1, 1); Try it Yourself » After...
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  • PHP Sorting Arrays
    The elements in an array can be sorted in alphabetical or numerical order, descending or ascending. PHP - Sort Functions For Arrays In this chapter, we will go through the following PHP array sort functions: sort() - sort arrays in ascending order rsort() - sort arrays in descending order asort() - sort associative arrays in ascending order, according to the value...
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