PHP Function List
is_numeric() doesn't exist. Closest matches:
- is_numeric
- is_integer
- is_null
- isinterface
- ibase_query
- imap_num_recent
- ingres_num_rows
- iis_stop_service
- ibase_num_fields
- ingres_query
- cairohintmetrics
- ovrimos_num_rows
- dbase_numrecords
- msql_numrows
- oci_num_rows
- ibase_num_params
- ifx_num_rows
- imagearc
- ingres_num_fields
- iis_start_service
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Finds whether the given variable is numeric. Numeric strings consist of optional sign, any number of digits, optional decimal part and optional exponential part.
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is_numeric($s) && floatval($s) == intval(floatval($s)) If the test returns true, the string is a representation of an integer. is_numeric (if it works as intended) protects from ...
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Using is_numeric function is quite faster than ctype_digit. is_numeric took 0.237 Seconds for one million runs. while ctype_digit took 0.470 Seconds.
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return (array_merge ($var) !== $var || ! is_numeric ( implode ( array_keys ( $var ) ) ) ); }?> If you are not concerned about the actual order of the indices, you can change the ...
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/* (!is_numeric($var))? */ echo $da.(( ! is_numeric ($TEST_VAR [($K [$i])]) ) ? $T: $F). $dz; /* (!is_int($var))? */ echo $da.(( ! is_int ($TEST_VAR [($K [$i])]) ) ? $T: $F)
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if (! is_numeric ($month) || ! is_numeric ($day) || ! is_numeric ($year)) { return NULL; } elseif (! checkdate ($month, $day, $year)) { return NULL;
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else if(! is_numeric ($liczba)) $liczba = null; else $liczba = 0; return $liczba; } ?> The difference is that it returns null when the argument isn't a number at ...
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To test if a variable is a number or a numeric string (such as form input, which is always a string), you must use is_numeric().
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if(substr ($range_exp [1], 0, 1) == '-' && ! is_numeric (substr ($range_exp [1], 0, 1))) { // Jumping range? $jump = str_split ($range ...
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See Also. The NULL type; isset() - Determine if a variable is set and is not NULL; is_bool() - Finds out whether a variable is a boolean; is_numeric() - Finds whether a ...

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For a quick overview over all documented PHP functions, click here.
