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PHP Function ctype_lower()
Syntax
Definition and Usage
Thsi function checkes if all of the characters in the provided string, text, are lowercase letters.
Paramters
Parameter | Description |
text | Required. The tested string. |
Return Value
Returns TRUE if every character in text is a lowercase letter in the current locale.
Example
Try out following example:
<?php
$strings = array('aac123', 'testing', "testin IS Done");
foreach ($strings as $testcase) {
if (ctype_lower($testcase)) {
echo "$testcase consists of all lowercase letters.<br />";
} else {
echo "$testcase does not have all lowercase letters.<br />";
}
}
?>
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This will produce following result:
aac123 does not have all lowercase letters.
testing consists of all lowercase letters.
testin IS Done does not have all lowercase letters.
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