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 // 1 .strlen($name); // 2. str_word_count($name) // 3. strrev($name); // 4. strpos(haystack, needle) // 5. str_replace(search, replace, subject) // 6. str_repeat(input, multiplier) // 7. rtrim(str) // 8.ltrim(str) $name = 'pawan hello world' ; echo $name; echo '<br>'; echo 'count pawan charchter method ' .strlen($name); echo '<br>'; echo 'only word count method ' .str_word_count($name); echo '<br>'; echo 'utlta word type method ' .strrev($name); echo '<br>'; echo 'kitne number ke baad likh h wo btata h method ' .strpos($name, 'hello'); echo '<br>'; echo 'words replace method ' .str_replace('hello', 'hlw', $name); echo '<br>'; echo 'word ko repeat karta h replace method ' .str_repeat($name, 10); echo '<br>'; echo 'right se space hata dega method ' .rtrim($name); echo '<br>'; echo 'left...