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Common functions for PHP to process strings
2022-07-06 07:46:00 【Brother Jing】
(1)trim() Remove whitespace and other characters on both sides of the string ;
(2)strlen() Gets the length of the string
(3)mb_strlen() Get string length ( Character encoding can be specified , Calculate the length of Chinese string )
(4)substr() Returns part of a string ;
(5)str_replace() Substring replacement
(6)str_repeat () Duplicate a string
(7)is_string() Check if the variable is a string ;
(8)str_shuffle () Randomly scramble a string
(9)sprintf() Returns the string generated from the formatted string ( Usually used to get the data table name after the sub table )
(10)strstr() First occurrence of lookup string
(11)addslashes Use backslashes to reference strings
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