PHP: trim - Manual
https://www.php.net/manual/ru/function.trim.php
trim — Удаляет пробелы (или другие символы) из начала и конца строки. trim is the fastest way to remove first and last char. Benchmark comparsion 4 different ways to trim string with '/' 4 functions...
Trim: перевод, произношение, транскрипция, примеры...
https://WooordHunt.ru/word/trim
Перевод слова trim, американское и британское произношение, транскрипция, словосочетания, однокоренные слова, примеры использования.
Trim (computing) - Wikipedia
https://en.wikipedia.org/wiki/Trim_(computing)
A trim command (known as TRIM in the ATA command set, and UNMAP in the SCSI command set) allows an operating system to inform a solid-state drive (SSD) which blocks of data are no longer considered in use and can be wiped internally. Trim was introduced soon after SSDs were introduced.