Nuances of Shorthand Operations in PHP

Note that in shorthand operations, comparison is performed using ==, not ===.

Without running the code, determine what will be displayed on the screen:

<?php
	$test = 3;
	
	if ($test) {
		echo '+++';
	} else {
		echo '---';
	}
?>

Without running the code, determine what will be displayed on the screen:

<?php
	$test = 'abc';
	
	if ($test) {
		echo '+++';
	} else {
		echo '---';
	}
?>

Without running the code, determine what will be displayed on the screen:

<?php
	$test = '';
	
	if ($test) {
		echo '+++';
	} else {
		echo '---';
	}
?>

Without running the code, determine what will be displayed on the screen:

<?php
	$test = 3 * 'abc';
	
	if ($test) {
		echo '+++';
	} else {
		echo '---';
	}
?>

Without running the code, determine what will be displayed on the screen:

<?php
	$test = null;
	
	if ($test) {
		echo '+++';
	} else {
		echo '---';
	}
?>

Without running the code, determine what will be displayed on the screen:

<?php
	$test = false;
	
	if ($test) {
		echo '+++';
	} else {
		echo '---';
	}
?>

Without running the code, determine what will be displayed on the screen:

<?php
	$test;
	
	if ($test) {
		echo '+++';
	} else {
		echo '---';
	}
?>

Without running the code, determine what will be displayed on the screen:

<?php
	$test = 0;
	
	if ($test) {
		echo '+++';
	} else {
		echo '---';
	}
?>

Without running the code, determine what will be displayed on the screen:

<?php
	$test = '0';
	
	if ($test) {
		echo '+++';
	} else {
		echo '---';
	}
?>

Without running the code, determine what will be displayed on the screen:

<?php
	$test = -1;
	
	if ($test) {
		echo '+++';
	} else {
		echo '---';
	}
?>