PHP Variables https://learning.applications.ge/note/public/3278 https://www.sololearn.com/learning/1059/1797/3456/1 https://www.w3schools.com/php/php_variables.asp https://www.javatpoint.com/php-variables https://www.tutorialrepublic.com/php-tutorial/php-variables.php Arithmetic Operators https://learning.applications.ge/note/public/3293 https://www.sololearn.com/learning/1059/1803/3469/1 https://www.w3schools.com/php/php_operators.asp Assignment Operators https://learning.applications.ge/note/public/3294 https://www.sololearn.com/learning/1059/1804/3472/1 https://www.w3schools.com/php/php_operators.asp Comparison Operators https://learning.applications.ge/note/public/3295 https://www.sololearn.com/learning/1059/1805/3503/1 https://www.w3schools.com/php/php_operators.asp Rules to create PHP variable https://learning.applications.ge/note/public/3277 https://www.roseindia.net/tutorial/php/phpbeginners/PHPvariable.html Case Sensitivity https://learning.applications.ge/note/public/3283 https://tutorialsclass.com/faq/is-php-a-case-sensitive-language/ PHP Comments https://learning.applications.ge/note/public/3279 https://www.sololearn.com/learning/1059/1795/3453/1 https://www.w3schools.com/php/php_comments.asp https://www.javatpoint.com/php-comments https://www.phptutorial.net/php-tutorial/php-comments/ echo / print https://learning.applications.ge/note/public/3280 https://www.sololearn.com/learning/1059/1794/3450/1 https://www.w3schools.com/php/php_echo_print.asp https://www.javatpoint.com/php-echo https://www.javatpoint.com/php-print https://www.tutorialrepublic.com/php-tutorial/php-echo-and-print-statements.php Differences between echo and print https://learning.applications.ge/note/public/3281 https://www.javatpoint.com/php-echo-and-print-statements Variable types https://learning.applications.ge/note/public/3282 https://www.sololearn.com/learning/1059/1796/3501/1 https://www.w3schools.com/php/php_datatypes.asp https://www.tutorialspoint.com/php/php_variable_types.htm https://www.javatpoint.com/php-data-types https://www.phptutorial.net/php-tutorial/php-data-types/ https://www.tutorialrepublic.com/php-tutorial/php-data-types.php Array types https://learning.applications.ge/note/public/3286 https://www.sololearn.com/learning/1059/1807/3476/1 https://www.sololearn.com/learning/1059/1808/3504/1 https://www.sololearn.com/learning/1059/1809/3505/1 https://www.w3schools.com/php/php_arrays.asp https://www.tutorialspoint.com/php/php_arrays.htm https://www.phptutorial.net/php-tutorial/php-array/ https://www.phptutorial.net/php-tutorial/php-associative-arrays/ https://www.phptutorial.net/php-tutorial/php-multidimensional-array/ https://www.tutorialrepublic.com/php-tutorial/php-arrays.php String functions https://learning.applications.ge/note/public/3284 https://www.w3schools.com/php/php_string.asp https://www.tutorialrepublic.com/php-tutorial/php-strings.php Math functions https://learning.applications.ge/note/public/3285 https://www.w3schools.com/php/php_math.asp If statement https://learning.applications.ge/note/public/3287 https://www.w3schools.com/php/php_if_else.asp https://www.tutorialspoint.com/php/php_decision_making.htm https://www.phptutorial.net/php-tutorial/php-if/ https://www.tutorialrepublic.com/php-tutorial/php-if-else-statements.php If-else statement https://learning.applications.ge/note/public/3288 https://www.sololearn.com/learning/1059/1823/3515/1 https://www.phptutorial.net/php-tutorial/php-if-else/ Else-if statement https://learning.applications.ge/note/public/3289 https://www.sololearn.com/learning/1059/1824/3517/1 https://www.phptutorial.net/php-tutorial/php-if-elseif/ Logical Operators https://learning.applications.ge/note/public/3305 https://www.sololearn.com/learning/1059/1806/3474/1 https://www.w3schools.com/php/php_operators.asp User defined functions https://learning.applications.ge/note/public/3290 https://www.sololearn.com/learning/1059/1834/3540/1 https://www.sololearn.com/learning/1059/1835/3542/1 https://www.w3schools.com/php/php_functions.asp https://www.tutorialspoint.com/php/php_functions.htm https://www.phptutorial.net/php-tutorial/php-function/ https://www.tutorialrepublic.com/php-tutorial/php-functions.php Loops https://learning.applications.ge/note/public/3291 https://www.sololearn.com/learning/1059/1826/3521/1 https://www.w3schools.com/php/php_looping.asp https://www.tutorialspoint.com/php/php_loop_types.htm https://www.phptutorial.net/php-tutorial/php-for-loop/ https://www.tutorialrepublic.com/php-tutorial/php-loops.php The break statement https://learning.applications.ge/note/public/3316 https://www.w3schools.com/php/php_looping_break.asp The continue statement https://learning.applications.ge/note/public/3317 https://www.sololearn.com/learning/1059/1831/3531/1 https://www.w3schools.com/php/php_looping_break.asp Main resources to learn PHP basics: https://www.php.net/ (official doc) https://www.sololearn.com/learning/1059 https://www.w3schools.com/php/ https://www.phptutorial.net/ https://www.tutorialrepublic.com/php-tutorial/ https://www.tutorialspoint.com/php/ https://www.javatpoint.com/php-tutorial PHP online editors: https://onlinephp.io/ https://www.writephponline.com/ https://www.mycompiler.io/new/php