![]() ![]() However, in PHP, unlike Javascript, you can add two numbers when one is of integer type and the other a string (or both are strings) without any problem. Let's compare two numbers, one enclosed in quotes, and the other without. ![]() In a similar way, PHP treats every value enclosed within quotes as a string. Var sum = parseInt(num1) + parseInt(num2) Else, you will have to first use the parseInt() to convert the string into integer type or parseFloat() to convert the string into a float before attempting to perform arithmetic operations. So in Javascript, you must not define numeric variables with values enclosed within quotes. Example in JavascriptĪs you can see, in Javascript the two variables are treated as strings and their values were concatenated instead of an addition to take place. However, by default, if the value of a variable is enclosed with quotes (single or double), it is considered as a string and in some languages, it will not give the desired results when used in arithmetic operations. In PHP, all you have to do is write a dollar sign $ followed by the variable name without having to specify the type. Javascript and PHP.įor instance, in JavaScript, all you have to do is use the keywords var or let before the variable name. Some programming languages are not so strict and thus you don't have to specify which data type it should store eg. These data types include char, string, int, double, float, array, boolean, etc. In most programming languages, it is a requirement to specify the data type that a variable should hold before using the variable. ![]()
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