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PHP: How to remove all non printable characters in a string?
I imagine I need to remove chars 0-31 and 127,
17 Answers
17
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Test if characters are in a string
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Use the grepl function
grepl(value, chars, fixed = TRUE)
# TRUE
Use ?grepl to find out more.
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Set cursor position on contentEditable
...upport DOM Range.
var editable = document.getElementById('editable'),
selection, range;
// Populates selection and range variables
var captureSelection = function(e) {
// Don't capture selection outside editable region
var isOrContainsAnchor = false,
isOrContainsFocus = false,
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How do I lowercase a string in C?
...ent such a function. So yes, just loop through the string and convert each character to lowercase.
Something trivial like this:
#include <ctype.h>
for(int i = 0; str[i]; i++){
str[i] = tolower(str[i]);
}
or if you prefer one liners, then you can use this one by J.F. Sebastian:
for ( ;...
Which MySQL datatype to use for an IP address? [duplicate]
...nvert them:
INSERT INTO `table` (`ipv4`) VALUES (INET_ATON("127.0.0.1"));
SELECT INET_NTOA(`ipv4`) FROM `table`;
For IPv6 addresses you could use a BINARY instead:
`ipv6` BINARY(16)
And use PHP’s inet_pton and inet_ntop for conversion:
'INSERT INTO `table` (`ipv6`) VALUES ("'.mysqli_real_es...
Select something that has more/less than x character
Was wondering if it's possible to select something that has more/less than x characters in SQL.
4 Answers
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Random alpha-numeric string in JavaScript? [duplicate]
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If you only want to allow specific characters, you could also do it like this:
function randomString(length, chars) {
var result = '';
for (var i = length; i > 0; --i) result += chars[Math.floor(Math.random() * chars.length)];
return result;
}
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[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
[精华] VC中BSTR、Char和CString类型的转换char*转换成CString，CString转换成char*，BSTR转换成char*，char*转换成BSTR，CString转换成BSTR，BSTR转换成CString，ANSI、Unicode和宽字符之间的转换...1、char*转换成CString
若将char*转换成CString，除了直接...
How to convert char to int?
What is the proper way to convert a char to int ?
This gives 49 :
11 Answers
11
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What is array to pointer decay?
...n explicit pointer to that array" - this is incorrect. If a is an array of char, then a is of type char[N], and will decay to char*; but &a is of type char(*)[N], and will not decay.
– Pavel Minaev
Sep 22 '09 at 19:39
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