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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 git.master, git.master_jit, rfc.property-hooks
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

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