echo 'string does not contain only digits'; } ?> Output 2. Negative Scenario – String contains not only numeric digits In this example, we take a string instrsuch that it contains some alphabets along with numeric digits. For the given value of string,preg_match()returnsfalseand else-bloc...
2. Negative Scenario – String contains characters other than those allowed for a floating point number In the following example, we will take a string which contains both digits and alphabets. We will check programmatically, if this string value can pass our test. PHP Program </> Copy <?ph...
ctype_alnum(string) : bool ParametersThe parameters of the ctype_alnum() function:string: An input string.Return ValueIt returns true –if the string contains alphanumeric value (i.e. alphabets, digits/number only), else it returns false....
Use the function below to turn base64 encoded strings to bare alphabets (get rid of / and + characters as well) <?php function base64clean($base64string) { $base64string = str_replace(array('=','+','/'),'',$base64string); return $base64string; } ?> up down -1 Gerard...
\n"); $str4 = "\r \n"; //space is there if(ctype_cntrl($str4)) echo ("str4 contains all control characters.\n"); else echo ("str4 does not contain all control characters.\n"); $str5 = "Hello123"; //alphabets & digits are there if(ctype_cntrl($str5)) echo ("str5 ...
string ucfirst ( string $str ) 将str 的首字符(如果首字符是字母)转换为大写字母,并返回这个字符串。 注意字母的定义取决于当前区域设定。例如,在默认的 “C” 区域,字符 umlaut-a(?)将不会被转换。 参数 str 输入字符串。 返回值 返回结果字符串。 范例 Example #1 ucfirst() 范例 <?php$foo ...
Use the function below to turn base64 encoded strings to bare alphabets (get rid of / and + characters as well) <?php function base64clean($base64string) { $base64string = str_replace(array('=','+','/'),'',$base64string); return $base64string; } ?>...
explode will take entire string as default if limit is not specified.<?php $exploded_array = explode($str_explode, $input_string, 2); ?> this will return,Array ( [0] => implode [1] => join|concatenate ) Finding intersection, difference and union of arrays...
string$escape= "\\" ):array|false 和fgets()类似,只除了fgetcsv()解析读入的行并找出CSV格式的字段然后返回一个包含这些字段的数组。 注意: 此函数会考虑区域设置。例如,如果LC_CTYPE为en_US.UTF-8,可能会错误的解析某些单字节编码的数据。 参数
if(emptyempty($_POST["name"])){ $nameErr="Name is required"; }else{ $name=input_data($_POST["name"]); // check if name only contains letters and whitespace if(!preg_match("/^[a-zA-Z ]*$/",$name)){ $nameErr="Only alphabets and white space are allowed"; ...