How do I check if a letter is uppercase in PHP?

How do I check if a letter is uppercase in PHP?

The ctype_upper() function in PHP used to check each and every character of a given string is in uppercase or not. If the string in upper case then it returns TRUE otherwise returns False. $text : The tested string.

How do I convert all characters to lowercase in PHP?

PHP | strtolower() Function The strtolower() function is used to convert a string into lowercase. This function takes a string as parameter and converts all the uppercase english alphabets present in the string to lowercase. All other numeric characters or special characters in the string remains unchanged.

How do you check if a string contains a number in PHP?

PHP – Check if String contains Numbers When you found a digit, you can break the loop and confirm that there is a number in the string. ctype_digit() function returns true if the string passed to it has digits for all of its characters, else it returns false.

How do you capitalize text in PHP?

The ucfirst() function converts the first character of a string to uppercase. Related functions: lcfirst() – converts the first character of a string to lowercase. ucwords() – converts the first character of each word in a string to uppercase.

How do you capitalize PHP?

The built-in functions for uppercase, lowercase and camel case in…

1. strtoupper() function– For making a PHP string uppercase (all letters in the string)
2. strtolower() function – that converts a specified string to lowercase letters.
3. ucwords() – camel cased i.e. capitalizes the first letter of each word in a string.

What are the primitives supported by PHP?

PHP supports total eight primitive data types: Integer, Floating point number or Float, String, Booleans, Array, Object, resource and NULL.

How to capitalize string characters in PHP?

Capitalize String Characters Using ucwords () in PHP Capitalize string is the way of converting the first letters of each word to capital. It is also called as camel-case first character of each word of the string. To convert string characters to capitalize, you have to use the ucwords () function.

How to make a string uppercase or lowercase in PHP?

PHP provides built-in functions for that. The functions are listed below which is followed by examples of using them. strtoupper() function– For making a PHP string uppercase (all letters in the string) strtolower() function – that converts a specified string to lowercase letters.

What is the use of Ctype_upper() function in PHP?

The ctype_upper() function in PHP used to check each and every character of a given string is in uppercase or not. If the string in upper case then it returns TRUE otherwise returns False.

How to convert mixed letters to capital letters in phpphp?

PHP uppercase conversion by strtoupper function. In the first example, a string variable is created with mixed letter text. The strtoupper function is used and that string variable is specified for converting all letters to capitals.