PHP Regular Expressions Summary: in this tutorial, you’ll learn about PHP regular expressions and functions that work with regular expression including preg_match(), preg_match_all(), and preg_replace(). Introduction to the PHP regular expressions PHP string functions allow you to test if a string contains a substring (str_contains()) or to replace all occurrences of a substring with another…
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PHP ucwords Summary: in this tutorial, you’ll learn how to use the PHP ucwords() function to make the first character of each word in a string uppercase. Introduction to the PHP ucwords() function The ucwords() function accepts a string and returns a new string with the first character of each word converted to uppercase: ucwords…
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PHP ucfirst Summary: in this tutorial, you’ll learn how to use the PHP ucfirst() function to make the first alphabetic character uppercase. Introduction to the PHP ucfirst() function The ucfirst() function accepts a string and returns a new string with the first character converted to uppercase if that character is alphabetic. Here’s the syntax of…
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PHP strtoupper Summary: in this tutorial, you’ll learn how to use the PHP strtoupper() function to convert all alphabetic characters of a string to uppercase. Introduction to the PHP strtoupper() function The strtoupper() function accepts a string and returns a new string with all alphabetic characters converted to uppercase. The following shows the syntax of…
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PHP strtolower Summary: in this tutorial, you’ll learn how to use the PHP strtolower() function to make the lowercase version of a string. Introduction to the PHP strtolower() function The strtolower() function accepts a string and returns a new string with all alphabetic characters converted to lowercase. Here’s the syntax of the strtolower() function: strtolower…
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PHP str_ends_with Summary: in this tutorial, you’ll learn how to use the PHP str_ends_with() function to check if a string ends with a substring. Introduction to the PHP str_ends_with() function The str_ends_with() function performs a case-sensitive search and checks if a string ends with a substring. Here’s the syntax of the str_ends_with() function: str_ends_with (…
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PHP str_starts_with Summary: in this tutorial, you’ll learn how to use the PHP str_starts_with() function to check if a string starts with a substring. Introduction to the PHP str_starts_with() function The str_starts_with() function performs a case-senstive search and checks if a string starts with a substring: str_starts_with ( string $haystack , string $needle ) :…
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PHP str_contains Summary: in this tutorial, you’ll learn how to use the PHP str_contains() function to check if a string contains a substring. Introduction to the PHP str_contains() function The PHP str_contains() function checks if a string contains a substring. Here’s the syntax of the str_contains() function: str_contains ( string $haystack , string $needle )…
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PHP htmlspecialchars Summary: in this tutorial, you’ll learn how to use the PHP htmlspecialchars() function to prevent XSS attacks. What Is XSS? XSS stands for cross-site scripting. It’s a kind of attack where a hacker injects malicious client code into a web page’s output. For example, if you have a comment section on your page…
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PHP rtrim Summary: in this tutorial, you’ll learn how to use the PHP rtrim() function to remove whitespace or other characters from the end of a string. Introduction to the PHP rtrim() function To remove the whitespace characters or other characters from the end of a string, you use the PHP rtrim() function. The following…
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