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<?php $vals = array('3 fish', ' +01.0001 ', ' +01.0000000 ', true, false, null, 1e8); foreach ($vals as $val) { printf("is %s an int? %s == %s --> %s\n", var_export($val, true), var_export((string)(int)$val, true), var_export(trim($val), true), var_export((string)(int)$val == trim($val), true) ); }
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
is '3 fish' an int? '3' == '3 fish' --> false is ' +01.0001 ' an int? '1' == '+01.0001' --> false is ' +01.0000000 ' an int? '1' == '+01.0000000' --> true is true an int? '1' == '1' --> true is false an int? '0' == '' --> false Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /in/Gog9g on line 8 Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /in/Gog9g on line 9 is NULL an int? '0' == '' --> false is 100000000.0 an int? '100000000' == '100000000' --> true
Output for 7.0.2 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
is '3 fish' an int? '3' == '3 fish' --> false is ' +01.0001 ' an int? '1' == '+01.0001' --> false is ' +01.0000000 ' an int? '1' == '+01.0000000' --> true is true an int? '1' == '1' --> true is false an int? '0' == '' --> false is NULL an int? '0' == '' --> false is 100000000.0 an int? '100000000' == '100000000' --> true
Output for 5.2.2 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.1
is '3 fish' an int? '3' == '3 fish' --> false is ' +01.0001 ' an int? '1' == '+01.0001' --> false is ' +01.0000000 ' an int? '1' == '+01.0000000' --> true is true an int? '1' == '1' --> true is false an int? '0' == '' --> false is NULL an int? '0' == '' --> false is 100000000 an int? '100000000' == '100000000' --> true
Output for 4.3.3 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.1
is '3 fish' an int? '3' == '3 fish' --> false is ' +01.0001 ' an int? '1' == '+01.0001' --> false is ' +01.0000000 ' an int? '1' == '+01.0000000' --> true is true an int? '1' == '1' --> true is false an int? '0' == '' --> false is NULL an int? '0' == '' --> false is 1.0E+8 an int? '100000000' == '100000000' --> true
Output for 4.3.0 - 4.3.2
is '3 fish' an int? '3' == '3 fish' --> false is ' +01.0001 ' an int? '1' == '+01.0001' --> false is ' +01.0000000 ' an int? '1' == '+01.0000000' --> true is true an int? '1' == '1' --> true is false an int? '0' == '' --> false is NULL an int? '0' == '' --> false is 1.E+8 an int? '100000000' == '100000000' --> true
preferences:
173.81 ms | 402 KiB | 315 Q