mirror of
https://github.com/namibia/awesome-cheatsheets.git
synced 2024-08-31 23:39:39 +00:00
commit
94a3376844
@ -11,9 +11,26 @@ echo ""; // Print a string or type that can be made into a string(I.E int, float
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print_r($arr); // Print anything, with type hints for array's and object's
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var_dump($arr); // Print anything, with type hints for any value and sizes
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/**
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* Usefull string manipulation methods
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*/
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$string = 'Awesome cheatsheets';
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str_contains($string, 'cheat'); // Find if the string contains the specified string (PHP >= 8.0)
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str_replace('Awesome', 'Bonjour', $string); // Replace all occurence (PHP >= 8.0)
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strcmp($string, 'Awesome cheatsheets'); // Compare two strings
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strpos($string, 'a', 0); // Get position in the string
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str_split($string, 2); // Split the string
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strrev($string); // Reverse a string
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trim($string); // Strip whitespace from the beginning and end of a string
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ucfirst($string); // Make a string's first character uppercase
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lcfirst($string); // Make a string's first character lowercase
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substr($string, 0, 4); // Return part of a string
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/**
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* Declaring an Array
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*/
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// Indexed Array
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$arr = array("John", "Doe", "Lorem", "Ipsum");
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@ -28,6 +45,16 @@ $arr = array (
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array("Ipsum",170,150)
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);
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// Declaring array with short syntax
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$arr = ["John", "Doe", "Lorem", "Ipsum"]; // Indexed Array
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$arr = ["John"=>"10", "Doe"=>"200", "Doe"=>"3000", "Ipsum"=>"40000"]; // Associative Array
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$arr = [
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["John",100,180],
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["Doe",150,130],
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["Lorem",500,200],
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["Ipsum",170,150], // You can have a "," at the end without throwing syntax errors
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];
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/**
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* Sorting an Array
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*/
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@ -38,6 +65,25 @@ ksort($arr); // Sort associative arrays in ascending order, according to the key
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arsort($arr); // Sort associative arrays in descending order, according to the value.
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krsort($arr); // Sort associative arrays in descending order, according to the key.
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/**
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* Conditions
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*/
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// If/Elseif/Else
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if($i > 10) {
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} elseif( $i > 100) {
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} else {
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}
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// Ternary
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$string = $state == 'Running' ? 'He is running' : 'I don\'t know';
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// Null coalescing
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$string = $startDate ?? '';
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/**
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* Ways of looping
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*/
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@ -81,6 +127,26 @@ switch($arr) {
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default:
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}
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/**
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* Match (PHP >= 8.0)
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* https://www.php.net/manual/fr/control-structures.match.php
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*/
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$food = 'apple';
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$return_value = match($food) {
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'apple', 'appel' => 'An apple',
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'banana' => 'A banana',
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'applepie' => 'An applepie',
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default => 'A fruit'
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};
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//You can also use it as a conditionnal and throw exceptions
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$str = 'Welcome to awesome cheatsheets';
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$return_value = match(true) {
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str_contains($str, 'Welcome') && str_contains($str ,'to') => 'en-EN',
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str_contains($str, 'Bonjour') && str_contains($str, 'sur') => 'fr-FR',
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default => throw new Exception('Not a recognized language')
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};
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/**
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* Global variables
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* http://php.net/manual/en/language.variables.superglobals.php
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@ -97,6 +163,31 @@ $_ENV; // php.ini options
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$argv; // Array of terminal arguments (filename included)
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$argc; // Number of arguments passed into terminal
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/**
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* Functions
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*/
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// Simple function
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function name($parameter);
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// Function with return type (void, int, float, string, array, object, mixed)
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function name($parameter) : void;
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// Function with optionnal parameter
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function name($parameter = '') : string;
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// Function with typed parameter (? means "can be null")
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function name(?string $parameter) : ?string;
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// Function with union types (PHP >= 8.0)
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function name(int|string $parameter1, array $parameter2) : int|string;
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// Function call
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name('my_parameter');
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// Null safe operator (PHP >= 8.0)
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$myObject?->getName()?->startWith('A');
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/**
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* Class
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* http://php.net/manual/en/language.oop5.basic.php
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@ -368,6 +459,48 @@ class ClassWithLogger
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}
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/**
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* Enums (PHP >=8.1)
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* https://www.php.net/manual/fr/language.types.enumerations.php
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*/
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interface StateCode {
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public function stateCode() : int;
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}
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enum States implements StateCode {
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case Running;
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case Stopped;
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public function stateCode() : int {
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return match($this) {
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State::Running => '444',
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State::Stopped => '666'
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};
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}
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}
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/**
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* You can also declare backed Enums
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*/
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enum States : int implements StateCode {
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case Running = 1;
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case Stopped = 0;
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public function stateCode() : int {
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return match($this) {
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State::Running => '444',
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State::Stopped => '666'
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};
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}
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}
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/** Enums can be use as a type */
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function notify(State $state) {
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// ...
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}
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notify(State::Running);
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/**
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* PHP Regex.
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*/
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