PHP – ip2long() Function
The PHP ip2long() function converts an IPv4 address into a long integer.
PHP – is_dir() Function
The PHP is_dir() function checks whether the specified filename is a directory.
PHP – is_executable() Function
The PHP is_executable() function checks whether the specified filename is executable.
PHP – is_file() Function
The PHP is_file() function checks whether the specified filename is a regular file.
PHP – is_finite() Function
The PHP is_finite() function checks whether a value is finite or not, and returns true (1) if the value is a finite number, or false/nothing if not.
PHP – is_infinite() Function
The PHP is_infinite() function checks whether a value is infinite or not, and returns true (1) if the value is an infinite number, or false/nothing if not.
PHP – is_link() Function
The PHP is_link() function checks whether the specified filename is a symbolic link.
PHP – is_nan() Function
The PHP is_nan() function checks whether a value is ‘not a number’, and returns true (1) if the value is ‘not a number’ or false/nothing if it is a number.
PHP – is_readable() Function
The PHP is_readable() function checks whether the specified filename is readable.
PHP – is_uploaded_file() Function
The PHP is_uploaded_file() function checks whether the specified file is uploaded via HTTP POST.
PHP – is_writable() Function
The PHP is_writable() function checks whether the specified filename is writable.
PHP – jdtofrench() Function
The PHP jdtofrench() function converts a Julian Day Count to a French Republican date (used by the French for twelve years from 1793).
PHP – jdtogregorian() Function
The PHP jdtogregorian() function converts a Julian Day Count to a Gregorian date.
PHP – jdtojewish() Function
The PHP jdtojewish() function converts a Julian Day Count to a Jewish date.
PHP – jdtojulian() Function
The PHP jdtojulian() function converts a Julian Day Count to a Julian date.
PHP – jdtounix() Function
The PHP jdtounix() function converts the Julian Day Count to a Unix timestamp.
PHP – jewishtojd() Function
The PHP jewishtojd() function converts a date from the Jewish Calendar to a Julian Day Count.
PHP – json_decode() Function
The PHP json_decode() function is used to decode or convert a JSON object to a PHP object.