php check if is number code example
Example 1: check if string is number or not php
$var_num = "1";
$var_str = "Hello World";
var_dump( is_numeric($var_num), is_numeric($var_str) );
Example 2: php is numeric
is_numeric ( $variable );
Example 3: php check if string or number
<?php if (is_numeric(887)) { echo "Yes"; } else { echo "No"; } ?>
Example 4: how to check if PHP variable contains non-numbers?
if ( is_numeric($_POST['foo']) ) {
$foo = $_POST['foo'];
} else {
}
Example 5: php check if string is integer
<?php
$strings = array('1820.20', '10002', 'wsl!12');
foreach ($strings as $testcase) {
if (ctype_digit($testcase)) {
echo "The string $testcase consists of all digits.\n";
} else {
echo "The string $testcase does not consist of all digits.\n";
}
}
?>