Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Perform a regular expression match
<?php preg_match( string $pattern, string $subject, array &$matches = null, int $flags = 0, int $offset = 0): int|false<?php {
$text = self::convert_int_to_char_for_ctype($text);
return \is_string($text) && '' !== $text && !preg_match('/[^A-Za-z0-9]/', $text);
}<?php {
$text = self::convert_int_to_char_for_ctype($text);
return \is_string($text) && '' !== $text && !preg_match('/[^A-Za-z]/', $text);
}<?php {
$text = self::convert_int_to_char_for_ctype($text);
return \is_string($text) && '' !== $text && !preg_match('/[^\x00-\x1f\x7f]/', $text);
}<?php {
$text = self::convert_int_to_char_for_ctype($text);
return \is_string($text) && '' !== $text && !preg_match('/[^0-9]/', $text);
}<?php {
$text = self::convert_int_to_char_for_ctype($text);
return \is_string($text) && '' !== $text && !preg_match('/[^!-~]/', $text);
}<?php {
$text = self::convert_int_to_char_for_ctype($text);
return \is_string($text) && '' !== $text && !preg_match('/[^a-z]/', $text);
}<?php {
$text = self::convert_int_to_char_for_ctype($text);
return \is_string($text) && '' !== $text && !preg_match('/[^ -~]/', $text);
}<?php {
$text = self::convert_int_to_char_for_ctype($text);
return \is_string($text) && '' !== $text && !preg_match('/[^!-\/\:-@\[-`\{-~]/', $text);
}<?php {
$text = self::convert_int_to_char_for_ctype($text);
return \is_string($text) && '' !== $text && !preg_match('/[^\s]/', $text);
}<?php {
$text = self::convert_int_to_char_for_ctype($text);
return \is_string($text) && '' !== $text && !preg_match('/[^A-Z]/', $text);
}<?php {
$text = self::convert_int_to_char_for_ctype($text);
return \is_string($text) && '' !== $text && !preg_match('/[^A-Fa-f0-9]/', $text);
}