07-if_statement/index.php

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00001 <?php
00016 function main()
00017 {
00018     if(""==false)
00019         echo "Empty string is equal to false<br/>\n";
00020     else
00021         echo "Empty string is not equal to false<br/>\n";
00022 
00023 
00024     if(""===false)
00025         echo "Empty string is exactly equal to false<br/>\n";
00026     else
00027         echo "Empty string is not exactly equal to false<br/>\n";
00028 
00029 
00030     if(0=="0")
00031         echo "Numeric zero is equal to string zero<br/>\n";
00032     else
00033         echo "Numeric zero is not equal to string zero<br/>\n";
00034 
00035     
00036     if(0==="0")
00037         echo "Numeric zero is exactly equal to string zero<br/>\n";
00038     else
00039         echo "Numeric zero is not exactly equal to string zero<br/>\n";
00040 
00041 
00042     if(1==1 && 2==2)
00043         echo "1 is equal to 1 and 2 is equal to 2<br/>\n";
00044     else
00045         echo "Either 1 is not equal to 1 or 2 is not equal to 2<br/>\n";
00046 
00047 
00048     //Dual of above (Break the line, change the sign)
00049     if(1!=1 || 2!=2)
00050         echo "Either 1 is not equal to 1 or 2 is not equal to 2<br/>\n";
00051     else
00052         echo "1 is equal to 1 and 2 is equal to 2<br/>\n";
00053 
00054 }
00055 
00056 
00057 main();
00058 
00059 ?>

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