PHP | ctype_lower() Function
Last Updated :
16 Apr, 2020
The ctype_lower() function is an inbuilt function in PHP which is used to check whether the given characters in the string is lower case or not.
Syntax:
bool ctype_lower( string $text )
Parameters: This function accepts single parameter $text which holds the string that need to be tested.
Return Value: This function returns TRUE if all characters of a string is a lowercase character in the current locale.
Below programs illustrate the ctype_lower() function in PHP:
Program 1:
<?php
$strings = array('gfg123', 'geeksforgeeks', 'GfG');
foreach ($strings as $testcase) {
if (ctype_lower($testcase)) {
echo "Yes\n";
} else {
echo "No\n";
}
}
?>
|
Program 2:
<?php
$str = "GeeksforGeeks";
$n = strlen($str);
$count = 0;
for($i = 0; $i < $n; $i++) {
if(ctype_lower($str[$i])) {
$count++;
}
}
echo "Totla number of lower case "
. "character in string: "
. $count;
?>
|
Output:
Totla number of lower case character in string: 11
Reference: https://www.php.net/manual/en/function.ctype-lower.php
Like Article
Suggest improvement
Share your thoughts in the comments
Please Login to comment...