PHP check if string contains numbers code example
Example 1: check if includes numbers php
if (preg_match('~[0-9]+~', $string)) {
echo 'string with numbers';
}
Example 2: check value contains numbers or letters php
ctype_digit(string text);
Parameter Used:
The ctype_digit() function in PHP accepts only one parameter.
text : Its mandatory parameter which specifies the tested string.
Return Values:
It returns TRUE if all characters of the string are numeric otherwise
return FALSE.
Input : '789495001'
Output : TRUE
Explanation : All digits, return True
Input : 'adc123' or '789.0877'
Output : FALSE
Explanation: String contains number and string or floating point,
return false.
Example 3: php check if string contains number
if (preg_match('/[A-Za-z]/', $myString) && preg_match('/[0-9]/', $myString))
{
echo 'Contains at least one letter and one number';
}
Example 4: check value contains numbers or letters php
is_numeric ( $var )
returns : true or false
'42' is numeric
1337 is numeric
1337 is numeric
1337 is numeric
1337 is numeric
1337.0 is numeric
'0x539' is NOT numeric
'02471' is numeric
'0b10100111001' is NOT numeric
'1337e0' is numeric
'not numeric' is NOT numeric
array (
) is NOT numeric
9.1 is numeric
NULL is NOT numeric