PHP の比較演算子

<?php
//1. comparing only numerical values/numbers using two variables
$pavan = 2;
$kumar = 5;
if($pavan==$kumar){
echo "TRUE : Because the two variable's values are same \n";
}
else{
echo "FALSE : Because the two variable's values are not same \n";
}
//2. Program to compare two string values
$a = "pavan";
$b = "pavan";
if($a==$b){
echo "TRUE : String values assigned to the two variables are same \n";
}
else{
echo "FALSE : String values assigned to the two variables are not same \n";
}
?>

<?php
$x1 = 100;
$y1 = "100";
var_dump($x1 === $y1); // will give result as false because types are not at all equal
?>

<?php
$pavan1 = 1;
$sake1 = 2;
if($pavan1!=$sake1){
echo "TRUE :: variables values are not same as you expected";
}
else{
echo "FALSE :: variables values are same as not you expected";
}
?>

<?php
$pavan1 = 1;
$sake1 = 2;
if($pavan1<>$sake1){
echo "TRUE :: variables values are not same as you expected .";
}
else{
echo "FALSE :: variables values are same as not you expected";
}
?>

<?php
$x2 = 100;
$y2 = "100";
var_dump($x2 !== $y2); // returns/provide result as true because types are not at all equal
?>

<?php
$x3 = 1473;
$y3 = 1474;
if($x3<$y3){
echo "x3 value :: $x3 \n";
echo "y3 value :: $y3 \n";
echo "x3 value is less than y3 value \n";
}
else{
echo "x3 value is less than y3 value";
}
?>
</h4>
<p><strong>出力:</strong></p>
<p><img  src="https://img.php.cn/upload/article/000/000/000/172490633931064.png" alt="PHP の比較演算子" ></p>
<h4>6.大なり比較演算子 (>)</h4>
<p>大なり演算子は、1<sup>st</sup> 変数値が 2<sup>nd</sup> 変数値より大きいか、または 2<sup>nd</sup> 変数値が大きいかどうかをチェックするために使用されます。 1<sup>st</sup> 変数の値。これらの比較演算子は、単純なものから複雑なものまで、多くのプログラムで一部の操作を実行するときに非常に役立ちます。</p>
<h5>例</h5>
<p>以下の「より大きい」演算子のプログラムは、どの変数値が他の変数値より大きいかを実装し、チェックするものです。</p>
<p><b>コード:</b></p>


<pre class="brush:php;toolbar:false"><?php
$x4 = 2020;
$y4 = 2019;
echo "x4 value :: $x4 \n";
echo "y4 value :: $y4 \n";
if($x4>$y4){
echo "x4 value is greater than y4 value \n";
}
else{
echo "y4 value is less than x4 value";
}
?>

<?php
$x5 = 2020;
$y5 = 2020;
echo "x5 value :: $x5 \n";
echo "y5 value :: $y5 \n";
if($x5<=$y5){
echo "TRUE :: x5 value is less than or equal to y5 value \n";
}
else{
echo "FALSE :: y5 value is less than x5 value";
}
?>
</h4>
<p><strong>Output:</strong></p>
<p><img  src="https://img.php.cn/upload/article/000/000/000/172490634339597.png" alt="PHP の比較演算子" ></p>
<h4>8. Greater than or Equal to Comparison Operator (>=)</h4>
<p>Greater than or Equal to operator helps in checking which number/variable’s value is greater than or equal to which number/other variables value. It also requires two variables values.</p>
<h5>Example</h5>
<p>X6 variables value can either be greater than or equal to the y6 variable’s value. Even though x6,y6 variables value are the same it will execute the statements in the IF condition only.</p>
<p><b>Code:</b></p>
<pre class="brush:php;toolbar:false"><?php
$x6 = 2020;
$y6 = 2020;
echo "x6 value :: $x6 \n";
echo "y6 value :: $y6 \n";
if($x6>=$y6){
echo "TRUE :: x6 value is greater than or equal to y6 value \n";
}
else{
echo "FALSE :: y6 value is less than x6 value";
}
?>