Little Fat Learn PHP summary 4-----php string Operations

1. String connection

The string is passed through a half point period "." To connect, you can concatenate two or more strings into a string.

2. Remove the string, end and end spaces and special characters

The trim () function is provided in PHP to remove the spaces and special characters on both sides of the string, the LTrim () function removes the spaces and special characters to the left of the string, and the RTrim () function is to remove the spaces and special characters to the right of the string.

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