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<?php //Source: https://bugs.php.net/bug.php?id=63893 $text = str_repeat( 'm', 2000 ); $long_from_a = str_repeat( 'a', 1 ); $long_from_x = str_repeat( 'x', 1500 ); $replacements = array( $long_from_a => 'b', $long_from_x => 'y' ); $start = microtime( true ); $result_1 = strtr( $text, $replacements ); echo "strtr: " . number_format( microtime( true ) - $start, 4 ) . "\n"; $start = microtime( true ); $result_2 = str_replace( array_keys( $replacements ), array_values( $replacements ), $text ); echo "str_replace: " . number_format( microtime( true ) - $start, 4 ) . "\n"; echo $result_1 === $result_2 ? "results match!\n": "no match!\n";
Output for 7.0.0 - 7.0.32, 7.1.0 - 7.1.33, 7.2.0 - 7.2.24, 7.3.0 - 7.3.12
strtr: 0.0000 str_replace: 0.0000 results match!
Output for 5.4.12 - 5.4.37, 5.4.39 - 5.4.41, 5.4.43 - 5.4.45, 5.5.0 - 5.5.13, 5.5.15 - 5.5.38, 5.6.0 - 5.6.38
strtr: 0.0001 str_replace: 0.0000 results match!
Output for 4.4.7, 5.4.38, 5.4.42, 5.5.14
strtr: 0.0002 str_replace: 0.0000 results match!
Output for 5.4.11
strtr: 0.9787 str_replace: 0.0000 results match!
Output for 5.4.10
strtr: 0.9598 str_replace: 0.0000 results match!
Output for 5.4.9
strtr: 0.9633 str_replace: 0.0000 results match!
Output for 5.4.8
strtr: 0.9729 str_replace: 0.0000 results match!
Output for 5.4.7
strtr: 0.9565 str_replace: 0.0000 results match!
Output for 5.4.6
strtr: 0.9730 str_replace: 0.0000 results match!
Output for 5.4.5
strtr: 0.9726 str_replace: 0.0000 results match!
Output for 5.4.4
strtr: 0.9782 str_replace: 0.0000 results match!
Output for 5.4.3
strtr: 0.9579 str_replace: 0.0000 results match!
Output for 5.4.2
strtr: 0.9683 str_replace: 0.0000 results match!
Output for 5.4.1
strtr: 0.9755 str_replace: 0.0000 results match!
Output for 5.4.0
strtr: 0.9574 str_replace: 0.0000 results match!
Output for 5.3.29
strtr: 0.7958 str_replace: 0.0000 results match!
Output for 5.3.28
strtr: 0.8692 str_replace: 0.0000 results match!
Output for 5.3.27
strtr: 0.8949 str_replace: 0.0000 results match!
Output for 5.3.26
strtr: 0.8691 str_replace: 0.0000 results match!
Output for 5.3.25
strtr: 0.8558 str_replace: 0.0000 results match!
Output for 5.3.24
strtr: 0.8744 str_replace: 0.0000 results match!
Output for 5.3.23
strtr: 0.8647 str_replace: 0.0000 results match!
Output for 5.3.22
strtr: 0.8639 str_replace: 0.0000 results match!
Output for 5.3.21
strtr: 0.8614 str_replace: 0.0000 results match!
Output for 5.3.20
strtr: 0.8850 str_replace: 0.0000 results match!
Output for 5.3.19
strtr: 0.8712 str_replace: 0.0000 results match!
Output for 5.3.18
strtr: 0.9091 str_replace: 0.0000 results match!
Output for 5.3.17
strtr: 0.8743 str_replace: 0.0000 results match!
Output for 5.3.16
strtr: 0.8826 str_replace: 0.0000 results match!
Output for 5.3.15
strtr: 0.8599 str_replace: 0.0000 results match!
Output for 5.3.14
strtr: 0.8801 str_replace: 0.0000 results match!
Output for 5.3.13
strtr: 0.8947 str_replace: 0.0000 results match!
Output for 5.3.12
strtr: 0.8746 str_replace: 0.0000 results match!
Output for 5.3.11
strtr: 0.8635 str_replace: 0.0000 results match!
Output for 5.3.10
strtr: 0.8629 str_replace: 0.0000 results match!
Output for 5.3.9
strtr: 0.8872 str_replace: 0.0000 results match!
Output for 5.3.8
strtr: 0.8844 str_replace: 0.0000 results match!
Output for 5.3.7
strtr: 0.8663 str_replace: 0.0000 results match!
Output for 5.3.6
strtr: 0.9038 str_replace: 0.0000 results match!
Output for 5.3.5
strtr: 0.8764 str_replace: 0.0000 results match!
Output for 5.3.4
strtr: 0.8873 str_replace: 0.0000 results match!
Output for 5.0.0, 5.3.3
strtr: 0.8779 str_replace: 0.0000 results match!
Output for 5.1.0, 5.3.2
strtr: 0.8627 str_replace: 0.0000 results match!
Output for 5.3.1
strtr: 0.8607 str_replace: 0.0000 results match!
Output for 5.3.0
strtr: 0.8930 str_replace: 0.0000 results match!
Output for 5.2.17
strtr: 0.8681 str_replace: 0.0000 results match!
Output for 5.2.16
strtr: 0.8713 str_replace: 0.0000 results match!
Output for 5.2.15
strtr: 0.8611 str_replace: 0.0000 results match!
Output for 5.2.14
strtr: 0.8848 str_replace: 0.0000 results match!
Output for 5.2.13
strtr: 0.8670 str_replace: 0.0000 results match!
Output for 5.2.12
strtr: 0.8878 str_replace: 0.0000 results match!
Output for 5.2.11
strtr: 0.8833 str_replace: 0.0000 results match!
Output for 5.2.10
strtr: 0.8594 str_replace: 0.0000 results match!
Output for 5.2.9
strtr: 0.8662 str_replace: 0.0000 results match!
Output for 5.2.8
strtr: 0.8632 str_replace: 0.0000 results match!
Output for 5.2.7
strtr: 0.8809 str_replace: 0.0000 results match!
Output for 5.2.6
strtr: 0.8644 str_replace: 0.0000 results match!
Output for 5.2.5
strtr: 0.8645 str_replace: 0.0000 results match!
Output for 5.2.4
strtr: 0.8789 str_replace: 0.0000 results match!
Output for 5.2.1, 5.2.3
strtr: 0.8690 str_replace: 0.0000 results match!
Output for 5.2.2
strtr: 0.8714 str_replace: 0.0000 results match!
Output for 5.2.0
strtr: 0.8822 str_replace: 0.0000 results match!
Output for 5.1.6
strtr: 0.8617 str_replace: 0.0000 results match!
Output for 5.1.5
strtr: 0.8704 str_replace: 0.0000 results match!
Output for 5.1.4
strtr: 0.8628 str_replace: 0.0000 results match!
Output for 5.1.3
strtr: 0.8660 str_replace: 0.0000 results match!
Output for 5.1.2
strtr: 0.8619 str_replace: 0.0000 results match!
Output for 5.1.1
strtr: 0.8703 str_replace: 0.0000 results match!
Output for 5.0.5
strtr: 0.8804 str_replace: 0.0000 results match!
Output for 5.0.4
strtr: 0.8806 str_replace: 0.0000 results match!
Output for 5.0.3
strtr: 0.8650 str_replace: 0.0000 results match!
Output for 5.0.2
strtr: 0.8745 str_replace: 0.0000 results match!
Output for 5.0.1
strtr: 0.8621 str_replace: 0.0000 results match!
Output for 4.4.9
strtr: 0.0571 str_replace: 0.0000 results match!
Output for 4.4.8
strtr: 0.0045 str_replace: 0.0000 results match!
Output for 4.4.6
strtr: 0.0408 str_replace: 0.0000 results match!
Output for 4.4.5
strtr: 0.0158 str_replace: 0.0000 results match!
Output for 4.4.4
strtr: 0.0241 str_replace: 0.0000 results match!
Output for 4.4.3
strtr: 0.0025 str_replace: 0.0000 results match!
Output for 4.4.2
strtr: 0.0505 str_replace: 0.0000 results match!
Output for 4.4.1
strtr: 0.0060 str_replace: 0.0000 results match!
Output for 4.4.0
strtr: 0.0068 str_replace: 0.0000 results match!
Output for 4.3.11
strtr: 0.0105 str_replace: 0.0000 results match!
Output for 4.3.10
strtr: 0.0389 str_replace: 0.0000 results match!
Output for 4.3.9
strtr: 0.0141 str_replace: 0.0000 results match!
Output for 4.3.8
strtr: 0.0027 str_replace: 0.0000 results match!
Output for 4.3.7
strtr: 0.0043 str_replace: 0.0000 results match!
Output for 4.3.6
strtr: 0.0031 str_replace: 0.0000 results match!
Output for 4.3.5
strtr: 0.0159 str_replace: 0.0000 results match!
Output for 4.3.4
strtr: 0.0362 str_replace: 0.0000 results match!
Output for 4.3.3
strtr: 0.0033 str_replace: 0.0000 results match!
Output for 4.3.2
strtr: 0.0162 str_replace: 0.0000 results match!
Output for 4.3.1
strtr: 0.0111 str_replace: 0.0000 results match!
Output for 4.3.0
strtr: 0.0039 str_replace: 0.0000 results match!
preferences:
206.87 ms | 401 KiB | 317 Q