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This article is about the difference between the efficiency of strtr, str_replace and preg_replace functions. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Having analyzed the source code of strtr before, compare the efficiency of strtr, str_replace and preg_replace:

The code is as follows:

$str =

'1111111100000000000000000000000001110000010000010010000010010000010100000010

'

$str = str_repeat ($str, 1)

$pattern1 = array ('12345) = >', '67891 = >')

$pattern2 = array ('averse = >', '1234567890 = >')

$pattern3 ='/ 12345 | 67891 Zero'

$pattern4 ='/ a | 1234567890 Universe'

$pattern5 = array ('12345,' 67891')

$pattern6 = array ('asides,' 1234567890')

$t = microtime (true)

For ($iTun0; $I

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