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run code in 150+ php & hhvm versions
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<?php $a = array('12'); array_walk($a, 'intval'); var_dump($a); echo phpversion();
Output for 7.1.0
array(1) { [0]=> string(2) "12" } 7.1.0
Output for 7.0.14
array(1) { [0]=> string(2) "12" } 7.0.14
Output for 7.0.10
array(1) { [0]=> string(2) "12" } 7.0.10
Output for 7.0.9
array(1) { [0]=> string(2) "12" } 7.0.9
Output for 7.0.8
array(1) { [0]=> string(2) "12" } 7.0.8
Output for 7.0.7
array(1) { [0]=> string(2) "12" } 7.0.7
Output for 7.0.6
array(1) { [0]=> string(2) "12" } 7.0.6
Output for 7.0.5
array(1) { [0]=> string(2) "12" } 7.0.5
Output for 7.0.4
array(1) { [0]=> string(2) "12" } 7.0.4
Output for 7.0.3
array(1) { [0]=> string(2) "12" } 7.0.3
Output for 7.0.2
array(1) { [0]=> string(2) "12" } 7.0.2
Output for 7.0.1
array(1) { [0]=> string(2) "12" } 7.0.1
Output for 7.0.0
array(1) { [0]=> string(2) "12" } 7.0.0
Output for hhvm-3.12.0
array(1) { [0]=> string(2) "12" } 7.0.99-hhvm
Output for hhvm-3.10.0
array(1) { [0]=> string(2) "12" } 5.6.99-hhvm
Output for 5.6.28
array(1) { [0]=> string(2) "12" } 5.6.28
Output for 5.6.25
array(1) { [0]=> string(2) "12" } 5.6.25
Output for 5.6.24
array(1) { [0]=> string(2) "12" } 5.6.24
Output for 5.6.23
array(1) { [0]=> string(2) "12" } 5.6.23
Output for 5.6.22
array(1) { [0]=> string(2) "12" } 5.6.22
Output for 5.6.21
array(1) { [0]=> string(2) "12" } 5.6.21
Output for 5.6.20
array(1) { [0]=> string(2) "12" } 5.6.20
Output for 5.6.19
array(1) { [0]=> string(2) "12" } 5.6.19
Output for 5.6.18
array(1) { [0]=> string(2) "12" } 5.6.18
Output for 5.6.17
array(1) { [0]=> string(2) "12" } 5.6.17
Output for 5.6.16
array(1) { [0]=> string(2) "12" } 5.6.16
Output for 5.6.15
array(1) { [0]=> string(2) "12" } 5.6.15
Output for 5.6.14
array(1) { [0]=> string(2) "12" } 5.6.14
Output for 5.6.13
array(1) { [0]=> string(2) "12" } 5.6.13
Output for 5.6.12
array(1) { [0]=> string(2) "12" } 5.6.12
Output for 5.6.11
array(1) { [0]=> string(2) "12" } 5.6.11
Output for 5.6.10
array(1) { [0]=> string(2) "12" } 5.6.10
Output for 5.6.9
array(1) { [0]=> string(2) "12" } 5.6.9
Output for 5.6.8
array(1) { [0]=> string(2) "12" } 5.6.8
Output for 5.6.7
array(1) { [0]=> string(2) "12" } 5.6.7
Output for 5.6.6
array(1) { [0]=> string(2) "12" } 5.6.6
Output for 5.6.5
array(1) { [0]=> string(2) "12" } 5.6.5
Output for 5.6.4
array(1) { [0]=> string(2) "12" } 5.6.4
Output for 5.6.3
array(1) { [0]=> string(2) "12" } 5.6.3
Output for 5.6.2
array(1) { [0]=> string(2) "12" } 5.6.2
Output for 5.6.1
array(1) { [0]=> string(2) "12" } 5.6.1
Output for 5.6.0
array(1) { [0]=> string(2) "12" } 5.6.0
Output for 5.5.38
array(1) { [0]=> string(2) "12" } 5.5.38
Output for 5.5.37
array(1) { [0]=> string(2) "12" } 5.5.37
Output for 5.5.36
array(1) { [0]=> string(2) "12" } 5.5.36
Output for 5.5.35
array(1) { [0]=> string(2) "12" } 5.5.35
Output for 5.5.34
array(1) { [0]=> string(2) "12" } 5.5.34
Output for 5.5.33
array(1) { [0]=> string(2) "12" } 5.5.33
Output for 5.5.32
array(1) { [0]=> string(2) "12" } 5.5.32
Output for 5.5.31
array(1) { [0]=> string(2) "12" } 5.5.31
Output for 5.5.30
array(1) { [0]=> string(2) "12" } 5.5.30
Output for 5.5.29
array(1) { [0]=> string(2) "12" } 5.5.29
Output for 5.5.28
array(1) { [0]=> string(2) "12" } 5.5.28
Output for 5.5.27
array(1) { [0]=> string(2) "12" } 5.5.27
Output for 5.5.26
array(1) { [0]=> string(2) "12" } 5.5.26
Output for 5.5.25
array(1) { [0]=> string(2) "12" } 5.5.25
Output for 5.5.24
array(1) { [0]=> string(2) "12" } 5.5.24
Output for 5.5.23
array(1) { [0]=> string(2) "12" } 5.5.23
Output for 5.5.22
array(1) { [0]=> string(2) "12" } 5.5.22
Output for 5.5.21
array(1) { [0]=> string(2) "12" } 5.5.21
Output for 5.5.20
array(1) { [0]=> string(2) "12" } 5.5.20
Output for 5.5.19
array(1) { [0]=> string(2) "12" } 5.5.19
Output for 5.5.18
array(1) { [0]=> string(2) "12" } 5.5.18
Output for 5.5.16
array(1) { [0]=> string(2) "12" } 5.5.16
Output for 5.5.15
array(1) { [0]=> string(2) "12" } 5.5.15
Output for 5.5.14
array(1) { [0]=> string(2) "12" } 5.5.14
Output for 5.5.13
array(1) { [0]=> string(2) "12" } 5.5.13
Output for 5.5.12
array(1) { [0]=> string(2) "12" } 5.5.12
Output for 5.5.11
array(1) { [0]=> string(2) "12" } 5.5.11
Output for 5.5.10
array(1) { [0]=> string(2) "12" } 5.5.10
Output for 5.5.9
array(1) { [0]=> string(2) "12" } 5.5.9
Output for 5.5.8
array(1) { [0]=> string(2) "12" } 5.5.8
Output for 5.5.7
array(1) { [0]=> string(2) "12" } 5.5.7
Output for 5.5.6
array(1) { [0]=> string(2) "12" } 5.5.6
Output for 5.5.5
array(1) { [0]=> string(2) "12" } 5.5.5
Output for 5.5.4
array(1) { [0]=> string(2) "12" } 5.5.4
Output for 5.5.3
array(1) { [0]=> string(2) "12" } 5.5.3
Output for 5.5.2
array(1) { [0]=> string(2) "12" } 5.5.2
Output for 5.5.1
array(1) { [0]=> string(2) "12" } 5.5.1
Output for 5.5.0
array(1) { [0]=> string(2) "12" } 5.5.0
Output for 5.4.45
array(1) { [0]=> string(2) "12" } 5.4.45
Output for 5.4.44
array(1) { [0]=> string(2) "12" } 5.4.44
Output for 5.4.43
array(1) { [0]=> string(2) "12" } 5.4.43
Output for 5.4.42
array(1) { [0]=> string(2) "12" } 5.4.42
Output for 5.4.41
array(1) { [0]=> string(2) "12" } 5.4.41
Output for 5.4.40
array(1) { [0]=> string(2) "12" } 5.4.40
Output for 5.4.39
array(1) { [0]=> string(2) "12" } 5.4.39
Output for 5.4.38
array(1) { [0]=> string(2) "12" } 5.4.38
Output for 5.4.37
array(1) { [0]=> string(2) "12" } 5.4.37
Output for 5.4.36
array(1) { [0]=> string(2) "12" } 5.4.36
Output for 5.4.35
array(1) { [0]=> string(2) "12" } 5.4.35
Output for 5.4.34
array(1) { [0]=> string(2) "12" } 5.4.34
Output for 5.4.32
array(1) { [0]=> string(2) "12" } 5.4.32
Output for 5.4.31
array(1) { [0]=> string(2) "12" } 5.4.31
Output for 5.4.30
array(1) { [0]=> string(2) "12" } 5.4.30
Output for 5.4.29
array(1) { [0]=> string(2) "12" } 5.4.29
Output for 5.4.28
array(1) { [0]=> string(2) "12" } 5.4.28
Output for 5.4.27
array(1) { [0]=> string(2) "12" } 5.4.27
Output for 5.4.26
array(1) { [0]=> string(2) "12" } 5.4.26
Output for 5.4.25
array(1) { [0]=> string(2) "12" } 5.4.25
Output for 5.4.24
array(1) { [0]=> string(2) "12" } 5.4.24
Output for 5.4.23
array(1) { [0]=> string(2) "12" } 5.4.23
Output for 5.4.22
array(1) { [0]=> string(2) "12" } 5.4.22
Output for 5.4.21
array(1) { [0]=> string(2) "12" } 5.4.21
Output for 5.4.20
array(1) { [0]=> string(2) "12" } 5.4.20
Output for 5.4.19
array(1) { [0]=> string(2) "12" } 5.4.19
Output for 5.4.18
array(1) { [0]=> string(2) "12" } 5.4.18
Output for 5.4.17
array(1) { [0]=> string(2) "12" } 5.4.17
Output for 5.4.16
array(1) { [0]=> string(2) "12" } 5.4.16
Output for 5.4.15
array(1) { [0]=> string(2) "12" } 5.4.15
Output for 5.4.14
array(1) { [0]=> string(2) "12" } 5.4.14
Output for 5.4.13
array(1) { [0]=> string(2) "12" } 5.4.13
Output for 5.4.12
array(1) { [0]=> string(2) "12" } 5.4.12
Output for 5.4.11
array(1) { [0]=> string(2) "12" } 5.4.11
Output for 5.4.10
array(1) { [0]=> string(2) "12" } 5.4.10
Output for 5.4.9
array(1) { [0]=> string(2) "12" } 5.4.9
Output for 5.4.8
array(1) { [0]=> string(2) "12" } 5.4.8
Output for 5.4.7
array(1) { [0]=> string(2) "12" } 5.4.7
Output for 5.4.6
array(1) { [0]=> string(2) "12" } 5.4.6
Output for 5.4.5
array(1) { [0]=> string(2) "12" } 5.4.5
Output for 5.4.4
array(1) { [0]=> string(2) "12" } 5.4.4
Output for 5.4.3
array(1) { [0]=> string(2) "12" } 5.4.3
Output for 5.4.2
array(1) { [0]=> string(2) "12" } 5.4.2
Output for 5.4.1
array(1) { [0]=> string(2) "12" } 5.4.1
Output for 5.4.0
array(1) { [0]=> string(2) "12" } 5.4.0
Output for 5.3.29
array(1) { [0]=> string(2) "12" } 5.3.29
Output for 5.3.28
array(1) { [0]=> string(2) "12" } 5.3.28
Output for 5.3.27
array(1) { [0]=> string(2) "12" } 5.3.27
Output for 5.3.26
array(1) { [0]=> string(2) "12" } 5.3.26
Output for 5.3.25
array(1) { [0]=> string(2) "12" } 5.3.25
Output for 5.3.24
array(1) { [0]=> string(2) "12" } 5.3.24
Output for 5.3.23
array(1) { [0]=> string(2) "12" } 5.3.23
Output for 5.3.22
array(1) { [0]=> string(2) "12" } 5.3.22
Output for 5.3.21
array(1) { [0]=> string(2) "12" } 5.3.21
Output for 5.3.20
array(1) { [0]=> string(2) "12" } 5.3.20
Output for 5.3.19
array(1) { [0]=> string(2) "12" } 5.3.19
Output for 5.3.18
array(1) { [0]=> string(2) "12" } 5.3.18
Output for 5.3.17
array(1) { [0]=> string(2) "12" } 5.3.17
Output for 5.3.16
array(1) { [0]=> string(2) "12" } 5.3.16
Output for 5.3.15
array(1) { [0]=> string(2) "12" } 5.3.15
Output for 5.3.14
array(1) { [0]=> string(2) "12" } 5.3.14
Output for 5.3.13
array(1) { [0]=> string(2) "12" } 5.3.13
Output for 5.3.12
array(1) { [0]=> string(2) "12" } 5.3.12
Output for 5.3.11
array(1) { [0]=> string(2) "12" } 5.3.11
Output for 5.3.10
array(1) { [0]=> string(2) "12" } 5.3.10
Output for 5.3.9
array(1) { [0]=> string(2) "12" } 5.3.9
Output for 5.3.8
array(1) { [0]=> string(2) "12" } 5.3.8
Output for 5.3.7
array(1) { [0]=> string(2) "12" } 5.3.7
Output for 5.3.6
array(1) { [0]=> string(2) "12" } 5.3.6
Output for 5.3.5
array(1) { [0]=> string(2) "12" } 5.3.5
Output for 5.3.4
array(1) { [0]=> string(2) "12" } 5.3.4
Output for 5.3.3
array(1) { [0]=> string(2) "12" } 5.3.3
Output for 5.3.2
array(1) { [0]=> string(2) "12" } 5.3.2
Output for 5.3.1
array(1) { [0]=> string(2) "12" } 5.3.1
Output for 5.3.0
array(1) { [0]=> string(2) "12" } 5.3.0
Output for 5.2.17
array(1) { [0]=> string(2) "12" } 5.2.17
Output for 5.2.16
array(1) { [0]=> string(2) "12" } 5.2.16
Output for 5.2.15
array(1) { [0]=> string(2) "12" } 5.2.15
Output for 5.2.14
array(1) { [0]=> string(2) "12" } 5.2.14
Output for 5.2.13
array(1) { [0]=> string(2) "12" } 5.2.13
Output for 5.2.12
array(1) { [0]=> string(2) "12" } 5.2.12
Output for 5.2.11
array(1) { [0]=> string(2) "12" } 5.2.11
Output for 5.2.10
array(1) { [0]=> string(2) "12" } 5.2.10
Output for 5.2.9
array(1) { [0]=> string(2) "12" } 5.2.9
Output for 5.2.8
array(1) { [0]=> string(2) "12" } 5.2.8
Output for 5.2.7
array(1) { [0]=> string(2) "12" } 5.2.7
Output for 5.2.6
array(1) { [0]=> string(2) "12" } 5.2.6
Output for 5.2.5
array(1) { [0]=> string(2) "12" } 5.2.5
Output for 5.2.4
array(1) { [0]=> string(2) "12" } 5.2.4
Output for 5.2.3
array(1) { [0]=> string(2) "12" } 5.2.3
Output for 5.2.2
array(1) { [0]=> string(2) "12" } 5.2.2
Output for 5.2.1
array(1) { [0]=> string(2) "12" } 5.2.1
Output for 5.2.0
array(1) { [0]=> string(2) "12" } 5.2.0
Output for 5.1.6
array(1) { [0]=> string(2) "12" } 5.1.6
Output for 5.1.5
array(1) { [0]=> string(2) "12" } 5.1.5
Output for 5.1.4
array(1) { [0]=> string(2) "12" } 5.1.4
Output for 5.1.3
array(1) { [0]=> string(2) "12" } 5.1.3
Output for 5.1.2
array(1) { [0]=> string(2) "12" } 5.1.2
Output for 5.1.1
array(1) { [0]=> string(2) "12" } 5.1.1
Output for 5.1.0
array(1) { [0]=> string(2) "12" } 5.1.0
Output for 5.0.5
array(1) { [0]=> string(2) "12" } 5.0.5
Output for 5.0.4
array(1) { [0]=> string(2) "12" } 5.0.4
Output for 5.0.3
array(1) { [0]=> string(2) "12" } 5.0.3
Output for 5.0.2
array(1) { [0]=> string(2) "12" } 5.0.2
Output for 5.0.1
array(1) { [0]=> string(2) "12" } 5.0.1
Output for 5.0.0
array(1) { [0]=> string(2) "12" } 5.0.0
Output for 4.4.9
array(1) { [0]=> string(2) "12" } 4.4.9
Output for 4.4.8
array(1) { [0]=> string(2) "12" } 4.4.8
Output for 4.4.7
array(1) { [0]=> string(2) "12" } 4.4.7
Output for 4.4.6
array(1) { [0]=> string(2) "12" } 4.4.6
Output for 4.4.5
array(1) { [0]=> string(2) "12" } 4.4.5
Output for 4.4.4
array(1) { [0]=> string(2) "12" } 4.4.4
Output for 4.4.3
array(1) { [0]=> string(2) "12" } 4.4.3
Output for 4.4.2
array(1) { [0]=> string(2) "12" } 4.4.2
Output for 4.4.1
array(1) { [0]=> string(2) "12" } 4.4.1
Output for 4.4.0
array(1) { [0]=> string(2) "12" } 4.4.0
Output for 4.3.11
array(1) { [0]=> string(2) "12" } 4.3.11
Output for 4.3.10
array(1) { [0]=> string(2) "12" } 4.3.10
Output for 4.3.9
array(1) { [0]=> string(2) "12" } 4.3.9
Output for 4.3.8
array(1) { [0]=> string(2) "12" } 4.3.8
Output for 4.3.7
array(1) { [0]=> string(2) "12" } 4.3.7
Output for 4.3.6
array(1) { [0]=> string(2) "12" } 4.3.6
Output for 4.3.5
array(1) { [0]=> string(2) "12" } 4.3.5
Output for 4.3.4
array(1) { [0]=> string(2) "12" } 4.3.4
Output for 4.3.3
array(1) { [0]=> string(2) "12" } 4.3.3
Output for 4.3.2
array(1) { [0]=> string(2) "12" } 4.3.2
Output for 4.3.1
array(1) { [0]=> string(2) "12" } 4.3.1
Output for 4.3.0
array(1) { [0]=> string(2) "12" } 4.3.0