<?php #dataType.php
    // basic data types illustrated with code

    echo "<pre>";
    print("String examples:");
    print("\n\n0. ");
    $aString = 'this is a single-quoted string';
    print('$aString' . "\n");
    print ("$aString \ninside a double-quoted string with line feeds\n");
    
    print("\n\n1. ");
    $aVar = -32768;
    echo "$aVar ";
    if (is_int($aVar) ) echo 'is an int';
    else echo 'is not an int'; 
    
    print("\n\n2. ");
    $aVar = 2.52;
    echo "$aVar ";
    if (is_double($aVar) ) echo 'is a double';
    else echo 'is not a double';
    
    print("\n\n3. ");
    $aVar = false;
    echo 'false ';
    if (is_bool($aVar) ) echo 'is a bool(ean)';
    else echo 'is not a bool(ean)';
    
    print("\n\n4. ");
    $aVar = "\t";
    echo "\t";
    if (is_string($aVar) ) echo ' is a string';
    else echo 'is not a string';
    
    print("\n\n5. ");
    $aVar =0;
    echo "$aVar ";
    if (is_int($aVar) ) echo 'is an int';
    else echo 'is not an int'; 
    
    print("\n\n6. ");
    $aVar = 'Hello, World\n';
    echo "$aVar ";
    if (is_string($aVar) ) echo 'is a string';
    else echo 'is not a string'; 
    
    print("\n\n7. ");
    $aVar = 1.2E3;
    echo "$aVar ";
    if (is_double($aVar) ) echo 'is a double';
    else echo 'is not a double';
    
    print("\n\n8. ");
    $aVar = true;
    echo 'true ';
    if (is_bool($aVar) ) echo 'is a bool(ean)';
    else echo 'is not a bool(ean)';
    
    print("\n\n9. ");
    $name = 'Lerdorf';
    $aVar = "Hello there, $name";
    echo "$aVar ";
    if (is_string($aVar) ) echo 'is a string';
    else echo 'is not a string'; 
    
?>