How to replace repeated characters with one character in php

Method: 1. Use the str_split() function to split the string and convert the string into a character array. One character in the string corresponds to an element in the array; 2. Use the array_unique() function to filter the array. of repeated characters; 3. Use the implode() function to convert the deduplicated array into a string.

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

php replace the repeated characters with One character

Implementation idea: Use the array method array_unique()

• Use str_split() to split the string and convert the string into a character array ;

• Use array_unique() to filter duplicate characters
  

• Use implode() to convert the array into a string
  

Implementation code:

Output result:

520134！

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