rfc:trailing_whitespace_numerics
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| Both sides previous revisionPrevious revision | Next revisionBoth sides next revision |
| rfc:trailing_whitespace_numerics [2019/03/06 01:16] – vain/vein ajf | rfc:trailing_whitespace_numerics [2019/03/06 06:13] – Typo bwoebi |
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| * <php>is_numeric()</php> returns <php>TRUE</php> only for numeric strings | * <php>is_numeric()</php> returns <php>TRUE</php> only for numeric strings |
| * Arithmetic operations (e.g. <php>$a * $b</php>, </php>$a + $b</php>) accept and implicitly convert both numeric and leading-numeric strings, but trigger the <php>E_NOTICE</php> “A non well formed numeric value encountered” for leading-numeric strings | * Arithmetic operations (e.g. <php>$a * $b</php>, <php>$a + $b</php>) accept and implicitly convert both numeric and leading-numeric strings, but trigger the <php>E_NOTICE</php> “A non well formed numeric value encountered” for leading-numeric strings |
| * When ''strict_types=1'' is not set, <php>int</php> and <php>float</php> parameter and return type declarations will accept and implicitly convert both numeric and leading-numeric strings, but likewise trigger the same <php>E_NOTICE</php> | * When ''strict_types=1'' is not set, <php>int</php> and <php>float</php> parameter and return type declarations will accept and implicitly convert both numeric and leading-numeric strings, but likewise trigger the same <php>E_NOTICE</php> |
| * Type casts and other explicit conversions to integer or float (e.g. <php>(int)</php>, <php>(float)</php>, <php>settype()</php>) accept all strings, converting both numeric and leading-numeric strings and producing 0 for non-numeric strings | * Type casts and other explicit conversions to integer or float (e.g. <php>(int)</php>, <php>(float)</php>, <php>settype()</php>) accept all strings, converting both numeric and leading-numeric strings and producing 0 for non-numeric strings |
rfc/trailing_whitespace_numerics.txt · Last modified: 2020/07/23 21:50 by ajf