Description:
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http://php.net/manual/en/function.memcache-increment.php

The description of Memcache::increment() is confusing. It is missing determiners, uses incorrect prepositions and apostrophes, and has tense disagreement.

Existing: Memcache::increment() increments value of the item on the specified _value_.
Suggestion: Memcache::increment() increments the value of an item by the specified _value_.

Existing: If the item with _key_ was not numeric and cannot be converted to number, it will change it's value to value.
Suggestion: If the item specified by _key_ is not numeric and cannot be converted to a number, Memcache::increment() will change its value to _value_.

Existing: Memcache::increment() does not create an item if it didn't exist.
Suggestion: Memcache::increment() does not create an item if one doesn't already exist.

Existing: Note: Do not use Memcache::increment() with item, which was stored compressed, because consequent call to Memcache::get() will fail.
Suggestion: Note: Do not use Memcache::increment() with items that have been stored compressed because subsequent calls to Memcache::get() will fail.

Expected result:
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Memcache::increment() increments the value of an item by the specified _value_. If the item specified by _key_ is not numeric and cannot be converted to a number, Memcache::increment() will change its value to _value_. Memcache::increment() does not create an item if one doesn't already exist.

   Note: Do not use Memcache::increment() with items that have been stored compressed because subsequent calls to Memcache::get() will fail.

Actual result:
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Memcache::increment() increments value of the item on the specified _value_. If the item with _key_ was not numeric and cannot be converted to number, it will change it's value to value. Memcache::increment() does not create an item if it didn't exist.

   Note: Do not use Memcache::increment() with item, which was stored compressed, because consequent call to Memcache::get() will fail.