email is read or not python code example

Example 1: in javascript check is is an array or not

Array.isArray(yourItem)

Example 2: php open file capital letters or not

$result = current(preg_grep("/".preg_quote($filename)."/i", glob("$path/*")));

Example 3: read a document in c getting name from console

#include<stdio.h>
int main(int argc,char *argv[]){
	FILE *in=fopen(*++argv,"r");
	char c;
	while((c=fgetc(in))!=EOF)
		putchar(c);
	fclose(in);
	return 0;
}