PHP – touch() Function
The PHP touch() function sets the access and modification time of the specified file.
PHP – trait Keyword
The PHP trait keyword is used to create traits, which are a way to allow classes to inherit multiple behaviors.
PHP – trigger_error() Function
The PHP trigger_error() function creates a user-level error message and can be used with the built-in error handler, or with a user-defined function.
PHP – try Keyword
The PHP try keyword is used to create a try…catch, or a try…catch…finally statement.
PHP – uasort() Function
The PHP uasort() function sorts an array by values using a user-defined comparison function while keeping the index association.
PHP – uksort() Function
The PHP uksort() function sorts an array by keys using a user-defined comparison function while keeping the index association.
PHP – uniqid() Function
The PHP uniqid() function generates a unique ID based on the microtime (the current time in microseconds).
PHP – unixtojd() Function
The PHP unixtojd() function converts a Unix timestamp (the number of seconds since midnight of January 1, 1970) to a Julian Day Count.
PHP – use Keyword
The PHP use keyword tells a class to inherit a trait and it gives an alias to a namespace.
PHP – usleep() Function
The PHP usleep() function delays execution of the current script for a specified number of microseconds (one millionth of a second).
PHP – usort() Function
The PHP usort() function sorts an array by values using a user-defined comparison function.
PHP – while Keyword
The PHP while keyword is used to create a while loop and is also used to set the looping condition of a do…while.
PHP – xor Keyword
The PHP xor keyword is a logical operator that’s return value will only be true if one of the statements is true and the other one is false.
PHP – yield Keyword
The PHP yield keyword is used to create a generator function which acts as iterators which can be looped through with a foreach loop.
PHP – yield from Keyword
The PHP yield from keyword is used to create a generator function which acts as iterators which can be looped through with a foreach loop.